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By Authority Of 

THE UNITED STATES OF AMERICA 

Legally Binding Document 



By the Authority Vested By Part 5 of the United States Code § 552(a) and 
Part 1 of the Code of Regulations § 51 the attached document has been duly 
INCORPORATED BY REFERENCE and shall be considered legally 
binding upon all citizens and residents of the United States of America. 
HEED THIS NOTICE : Criminal penalties may apply for noncompliance. 




Document Name: BOCA: Plumbing Code 



CFR Section(s): 2 4 CFR 200.925c(a)(l)(i) 



Standards Body: Building Officials and Code Administrators International 



NINTH EDITION 



ISSUED EVERY THREE YEARS 



The 



OCA 




Plumbing Coda 



993 




BUILDING OFFICIALS & CODE ADMINISTRATORS 
INTERNATIONAL, INC. 



NOTE: The BOCA National Codes are designed for adoption by state or local governments by reference only. Jurisdictions adopting 
them may make necessary additions, deletions and amendments in their adopting document. Incorporation of any part of the BOCA 
National Codes in codes published by states, local governments, regulatory agencies, individuals or organizations is expressly 
prohibited. When your jurisdiction has adopted one or more of the BOCA National Codes, please send a copy of the adopting 
document to the BOCA Executive offices. 

Once this material has been adopted by a rule-making jurisdiction, other than by reference, all parties, including the rule-making 
jurisdiction, may reproduce the material in whole or in part subject only to a nonexclusive, royalty-bearing license with Building 
Officials & Code Administrators International Inc. Any party desiring such a license should contact: Executive Director, BOCA 
International, 4051 West Flossmoor Road, Country Club Hills, Illinois 60478-5795. 



Copyright, 1 993, Building Officials and Code Administrators, International, Inc. 

All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, 
including photocopy, recording or by an information storage and retrieval system without advance permission in writing from the 
publisher For information, address: Building Officials and Code Administrators International, 4051 West Flossmoor Road, Country 
Club Hills , Illinois 604 78-5 795 . 

BOCA® is the trademark of Building Officials and Code Administrators International, Inc., and is registered in the U.S. Patent and 
Trademark Office . 



Printed in the United States of America 
First printing: March, 1993 
Second printing: March, 1994 
Third printing: September, 1995 



I III B| M0NT PUBUC UBf,AR V DISTRICT 

3 1559 00099 2568 



The BOCA National 
Plumbing Code/ 1 993 



Model building regulations for the protection 
of public health, safety and welfare. 



NINTH EDITION 



DATE DUE 






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?4AK U 3 /.UUU 




m I 3 2000 








AUG 2 7 2001 

















































OEMCO, INC. 38-2971 



As recommended and maintained 
by the voting membership of 




BUILDING OFFICIALS & CODE ADMINISTRATORS INTERNATIONAL, INC. 

Serving Government & 4051 W. Flossmoor Rd. Country Club Hills, IL 60478-5795 

Industry Since 1915 Telephone 708/799-2300 Facsimile 708/799-4981 



Mideast Regional Office 

1245 Sunbury Road, Suite 100 

Westerville, Ohio 43081-9308 

Telephone 614/890-1064 

Facsimile 614/890-9712 



REGIONAL OFFICES 



Eastern Regional Office 

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Suite 301 
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10830 E. 45th Street, Ste. 200 

Tulsa, OK 74146-3809 

Telephone 918/664-4434 

Facsimile 918/664-4435 



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6 Omega Terrace 
Latham, NY 12110-1939 
Telephone 518/782-1708 
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lemonf Pukik Library Bhtrhi 



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browf, £ 6Q4W **§43§ 



PREFACE 



The need for a modern, up-to-date performance code covering the design and installation of plumbing systems has long been 
recognized by code officials. The BOCA National Plumbing Code, now in its ninth edition, has been designed to meet this need 
through the establishment of model regulations to safeguard the public health in large metropolitan areas and small communities 
alike. 

The BOCA National Plumbing Code establishes minimum plumbing regulations in terms of performance objectives, implemented 
by specific requirements, rather than in rigid specifications. This makes possible the acceptance of new materials which can be 
evaluated under nationally recognized standards, without the necessity of adopting cumbersome amendments for each variable 
condition. In addition, by presenting the purposes to be accomplished rather than the method to be followed, the designer is allowed 
the widest possible freedom, and the development of new and innovative plumbing systems is not hindered. 

The code adopts nationally recognized standards as the criteria for evaluation of minimum safe practice, or for determining the 
performance of materials or systems of construction. The application of these standards is stated in the text of the code requirements, 
and the standards are listed and identified in Chapter 19, making it practical and convenient to update any standard as it is revised or 
reissued by the sponsoring agency. 

In seeking to provide communities with a complete set of provisions to cover plumbing and plumbing systems, articles on hospital 
plumbing and individual water supply have been included. These specialty articles, in addition to the more general articles such as 
vents and venting, drainage systems, plumbing fixtures, etc., serve to make the BOCA National Plumbing Code the most complete 
and up-to-date model plumbing code available. 

This ninth edition presents the BOCA National Plumbing Code as originally issued with changes through 1992 and with certain 
editorial changes made to maintain the sequence of the code and to update the references to standards. 

This code, as are the other codes published by Building Officials and Code Administrators International, is kept up to date through 
the review of changes proposed by code enforcement officials, industry and design professionals, and other interested persons and 
organizations. Proposed changes are discussed in a public hearing, carefully reviewed by committees, and acted upon by code 
enforcement officials in an open meeting of the organization. A new edition such as this is then prepared every three years, and 
contains all approved changes since the previous edition. 

Changes as described above do not just happen. The BOCA National Plumbing Code is dedicated to the thousands of code 
enforcement officials from throughout the United States and Canada; to the engineers, architects, technicians, builders, contractors, 
material producers, trade associations and others who voluntarily collaborated in its preparation; and to the members of the code 
changes committees and their constituent committees, who participated in the important work of keeping the code abreast of new 
developments in construction technology. These individuals have given unstintingly of their time and their talents to produce and 
maintain this performance-type code, which has been widely recognized, highly respected, and adopted by countless communities. 

Use of the BOCA National Plumbing Code or any of the other BOCA National Codes within a government jurisdiction is intended 
to be accomplished only through adoption by reference in a proceeding of the jurisdiction's board, council, or other authoritative 
governing body. At the time of adoption, jurisdictions should insert the appropriate information in those passages of a code requiring 
specific local information, such as the date of adoption, name of adopting jurisdiction, dollar amount of fines and permit costs, etc. 
These passages are shown in bracketed small capital letters in the codes, and are also listed in the sample adoption ordinance page 
of each code for which the local adoption information is required. Additionally, jurisdictions may amend or modify BOCA National 
Code provisions to accomplish desired local requirements, although use of the codes in substantially original and standardized form 
is encouraged by the BOCA organization. A sample draft of an adopting ordinance for the BOCA National Plumbing Code is provided 
on page vii. 

This document has been developed under the published procedures of Building Officials and Code Administrators International, 
Inc. These procedures are designed to obtain the views and comments of those in the construction industry willing to participate. 
While these procedures assure the highest degree of care, neither BOCA, its members, nor those participating in its activities accepts 
any liability resulting from compliance or noncompliance with the provisions given herein, for any restrictions imposed on materials 
or processes, or for the completeness of the text. 

BOCA has no power or authority to police or enforce compliance with the contents of this code. It is only the governmental body 
that enacts the code into law that does so. 



k ® 



NOTE TO BOCA" NATIONAL 
CODE USERS 



The 1 993 editions of the BOCA National Codes contain, for the benefit and convenience of code 
users, vertical lines in the outside margins of some pages. 

As in previous editions, vertical lines in the margin indicate approved changes to the text of 
code requirements. Editorial changes are not so marked. For example, lines shown in the margins 
of the 1993 BOCA National Codes indicate technical content changes since the 1990 editions. 
Asterisks in the margin indicate locations from which 1990 code text has been deleted. Unlike 
the 1 990 editions, these asterisks are no longer used to indicate text that has moved to a different 
location in the code. These features are designed to streamline the review process for jurisdictions 
wishing to adopt current, up-to-date provisions. 

Several additional features are reflected in the 1993 editions of the BOCA National Codes. 

Definitions of terms have been rearranged in order to locate them within the chapter or section 
that represents the predominant subject matter associated with each term. Definitions related 
predominantly to Chapter 1 and those that have broad applicability throughout the code remain 
in full in Chapter 2. All defined terms are listed alphabetically in Chapter 2 followed by either 
the text of the definition or a reference to the section number that contains the text of the 
definition. Selected defined terms are italicized where they appear in the code in the same manner 
as in previous editions. 

Additionally, an indenting feature is used in tandem with the codes' decimal-based section 
numbering system to indicate the hierarchy of each subsection. 

The values stated in the U.S. customary units of measurement are to be regarded as code 
requirements. The metric equivalents of U.S. customary units may be approximate. Metric 
equivalents are not indicated for materials identified by nominal sizes. For actual dimensions 
refer to the appropriate material standard listed in Chapter 19. The nominal sizes included in the 
BOCA National Codes indicate the common designation of materials by that industry. 



IV 



A GUIDE TO USE OF THE 
BOCA® NATIONAL PLUMBING CODE 



The format and provisions of the BOCA National Plumbing Code are designed to provide units of government with effective minimum 
requirements for safe plumbing systems. 

The following step-by-step approach is recommended for use in determining the code's application to particular building plumbing 
systems within a government's jurisdiction. 

1. Plumbing fixtures: Determine minimum number of fixtures required in Section P- 1204.0 and Table P-1204. 1. Determine 
compliance with fixture requirements (Chapter 12). 

2. Piping material: Determine compliance with piping material requirements (Chapter 4) and proper joints and connections 
(Chapter 5). Determine compliance with pipe support requirements and hanger spacing (Chapter 13). 

3. Drainage, waste and vent: Determine compliance with drainage piping requirements and size (Chapters 6, 7 and 18). 
Determine compliance with vent system requirements and size (Chapters 9 and 18). Determine compliance with cleanout 
location and installation requirements (Chapter 11). 

4. Special waste: Determine if separators, interceptors or neutralizing devices are required as specified in Sections P- 3 05.0, 
P-704.0 and P- 1 004.0, and comply with requirements. 

5. Water supply: Determine compliance with water supply requirements (Chapters 15 and 16). Determine compliance with 
protection of potable water against backflow (Section P-1507.0). 

6. Storm drainage: Determine rainfall rate of area (Appendix A). Determine compliance with drainage system requirements 

(Chapter8). 

7. Health care facilities: Determine compliance with special requirements for health care facilities (Chapter 14). 



ADOPTION INFORMATION 

The BOCA National Codes are designed and promulgated to be adopted by reference by ordinance. Jurisdictions wishing to adopt 
the BOCA National Plumbing Code 1 1993 as enforceable minimum plumbing safety requirements should insure that certain factual 
information is included in the adopting ordinance at the time adoption is being considered by the appropriate governmental body. 
The following sample adoption ordinance addresses several key elements of a code adoption ordinance, including the information 
required for insertion into the code text. 

SAMPLE ORDINANCE FOR ADOPTION OF THE 1993 BOCA NATIONAL PLUMBING CODE 

Bill Number Ordinance Number 



AN ORDINANCE ESTABLISHING THE MINIMUM REGULATIONS GOVERNING THE DESIGN, INSTALLATION AND 
CONSTRUCTION OF PLUMBING SYSTEMS, BY PROVIDING REASONABLE SAFEGUARDS FOR SANITATION TO 
PROTECT THE PUBLIC HEALTH AGAINST THE HAZARDS OF INADEQUATE, DEFECTIVE OR INSANITARY PLUMB- 
ING INSTALLATIONS; KNOWN AS THE PLUMBING CODE; AND REPEALING EXISTING ORDINANCE NUMBER 

{Present Ordinance if any) OF THE {Type of Jurisdiction) OF {Name of Jurisdiction), STATE OF {State Name). 

Be it ordained by the {Governing Body) of the {Name of Jurisdiction) as follows: 

SECTION 1. ADOPTION OF PLUMBING CODE. 

That a certain document, three (3) copies of which are on file in the office of the {Jurisdictions Keeper of Records) of the {Type of 
Jurisdiction) of {Name of Jurisdiction), being marked and designated as "The BOCA National Plumbing Code, Ninth Edition, 1 993", 
as published by The Building Officials and Code Administrators International, Inc., be and is hereby adopted as the Plumbing Code 
of the {Type of Jurisdiction) of {Name of Jurisdiction) in the State of {State Name); for the control of buildings and structures as herein 
provided; and each and all of the regulations, provisions, penalties, conditions and terms of said BOCA National Plumbing Code are 
hereby referred to, adopted and made a part hereof, as if fully set out in this Ordinance, with the additions, insertions and changes, if 
any, prescribed in Section 3 of this Ordinance. 

SECTION 2. INCONSISTENT ORDINANCES REPEALED. 

That Ordinance Number {Present Ordinance Number) of the {Type of Jurisdiction) of (Name of Jurisdiction) entitled {Full Title of 
Present Ordinance) and all other ordinances or parts of ordinances in conflict herewith are hereby repealed. 

SECTION 3. ADDITIONS, INSERTIONS AND CHANGES. 
That the following sections are hereby revised as follows: 

Section P- 10 1.1 (page 1, second line). Insert: {Name of Jurisdiction). 

Section P- 113.2 (page 4, third line). Insert: {Dollar Amount for Fees). 

Section P- 1 16.4 (page 5, seventh, eighth and ninth lines). Insert: {Offense, Dollar Amount and Time). 

Section P- 117.2 (page 5, fifth and sixth lines). Insert: {Dollar Amount in Two Locations). 

Section P-304.3 (page 13, third line). Insert: {Distance in Feet). 

Section P- 309.4 (page 14, second and third lines). Insert: {Depth in Feet, Depth in Inches). 

Section P-309.5 (page 14, second and fourth lines). Insert: {Number in Inches in Two Locations). 

SECTION 4. SAVING CLAUSE. 

That nothing in this Ordinance or in the Plumbing Code hereby adopted shall be construed to affect any suit or proceeding impending 
in any court, or any rights acquired, or liability incurred, or any cause or causes of action acquired or existing, under any act or 
ordinance hereby repealed as cited in Section 2 of this Ordinance; nor shall any just or legal right or remedy of any character be lost, 
impaired or affected by this Ordinance. 

SECTION 5. DATE OF EFFECT. 

That the {Jurisdictions Keeper of Records) shall certify to the adoption of this Ordinance and cause the same to be published as 
required by law; and this Ordinance shall take full force and effect {Time Period) after this date of final passage and approval. 



TABLE OF CONTENTS 



Chapter 1 ADMINISTRATION 



Section 



101.0 
102.0 
103.0 
104.0 
105.0 
106.0 
107.0 
108.0 
109.0 
110.0 
111.0 



General 1 

Applicability 1 

Repairs and maintenance 1 

Validity 1 

Department of plumbing inspection 2 

Duties and powers of the code official .... 2 

Approval 2 

Application for permit 3 

Permits . 3 

Demolition of structures 4 

Moved structures 4 



Section Page 

P-112.0 Conditions of permit 4 

P-113.0 Fees 4 

P-114.0 Inspection 4 

P-115.0 Workmanship 5 

P-116.0 Violations 5 

P-117.0 Stop work order 5 

P-118.0 Notice of approval 5 

P-119.0 Unsafe conditions 5 

P-120.0 Emergency measures 6 

P-1 21 .0 Means of appeal 6 



Chapter 2 DEFINITIONS 9 

P-201 .0 General 9 

P-202.0 General definitions 9 



Chapter 3 GENERAL REGULATIONS 13 



P-301.0 General 13 

P-302.0 Health and safety 1 3 

P-303.0 Connections to plumbing systems 

required 13 

P-304.0 Connection to public water and sewer 

system 13 

P-305.0 Exclusion of materials detrimental to 

the sewer system 13 

P-306.0 Piping measurements 13 



P-307.0 Washroom and toilet room 

requirements 14 

P-308.0 Strains and stresses in pipe 14 

P-309.0 Protection of pipes 14 

P-310.0 Sleeves 14 

P-311 .0 Ratproofing 15 

P-312.0 Toilet facilities for workers 15 

P-313.0 Elevator shafts and equipment rooms . . 15 



Chapter 4 MATERIALS 17 



P-401.0 General 17 

P-402.0 Identification and labeling of materials ... 17 
P-403.0 Water supply piping system materials ... 17 
P-404.0 Sanitary drainage and vent piping system 

materials 18 



P-405.0 Storm drainage piping system 

material 19 

P-406.0 Pipe fittings, valves and nipples 19 

P-407.0 Special materials 19 

P-408.0 Fixture materials 20 



Chapters JOINTS AND CONNECTIONS 21 



501 .0 

502.0 

503.0 

504.0 

505.0 

506.0 

P-507.0 

P-508.0 

P-509.0 



P-510.0 

P-511.0 
P-512.0 



General 21 

Definitions 21 

ABS plastic pipe and fittings 21 

Asbestos-cement pipe and fittings 21 

Bituminized fiber pipe 21 

Brass pipe and fittings 21 

Cast-iron pipe and fittings 22 

Concrete pipe and fittings 22 

Copper or copper-alloy pipe and 

fittings 22 

Copper or copper-alloy tubing and 

fittings 22 

CPVC plastic pipe and fittings 22 

Galvanized steel pipe and fittings 23 



P-513.0 Lead pipe and fittings 23 

P-514.0 Polybutylene plastic pipe, tubing 

and fittings 23 

P-51 5.0 Polyethylene plastic pipe, tubing 

and fittings 23 

P-51 6.0 PVC plastic pipe and fittings 23 

P-51 7.0 Vitrified clay pipe and fittings 23 

P-518.0 Joints between pipe and fittings of 

different material 23 

P-51 9.0 Prohibited joints and connections 24 

P-520.0 Connections between fixtures 24 

P-521 .0 Expansion joints 24 

P-522.0 Penetrations 24 



THE BOCA NATIONAL PLUMBING CODE/1993 



Chapter 6 SANITARY DRAINAGE SYSTEMS 25 



Section Page 

P-601 .0 General 25 

P-602.0 Definitions 25 

P-603.0 Drainage system sizing 25 



Section Page 

P -604.0 Drainage piping installation 26 

P-605.0 Fittings and connections 27 

P-606.0 Sewage pumps and ejectors . , 27 



Chapter? INDIRECT WASTE PIPING AND SPECIAL WASTE . . . . . 29 



P-701 .0 General 29 

P-702.0 Definitions 29 



P-703.0 Indirect wastes 29 

P-704.0 Special wastes 30 



Chapter 8 STORM DRAINAGE SYSTEMS 31 



P-801 .0 General 31 

P-802.0 Definitions 31 

P -803.0 Where required 31 

P-804.0 Storm water drainage system 

installation 31 

P-805.0 Size of building storm drains, building 

storm sewers and leaders 31 



P-806.0 Building subdrains 33 

P-807.0 Subsoil drains 33 

P-808.0 Traps on storm drains and leaders 33 

P-809.0 Conductors and connections 33 

P-810.0 Roof drains . 33 

P-811.0 Controlled flow roof drain systems 33 



Chapter 9 VENTS AND VENTING 35 



P-901 .0 General 35 

P-902.0 Definitions 35 

P-903.0 Where required 35 

P-904.0 Vent pipe sizing 35 

P-905.0 Vent stacks and stack vents 36 

P-906.0 Vent terminals 36 

P-907.0 Vent grades and connections 37 

P-908.0 Wet venting 37 

P-909.0 Common vents 37 



P-910.0 Circuit venting 37 

P-911 .0 Fixture vents 38 

P-91 2.0 Relief vents for stacks of more than 

ten branch intervals 38 

P-913.0 Combination drain and vent system .... 38 

P-91 4.0 Island fixture venting 39 

P-915.0 Waste stack vent 39 

P-916.0 Frost closure 39 

P-91 7.0 Other utilization prohibited 39 



Chapter 10 TRAPS, INTERCEPTORS, SEPARATORS AND BACKWATER VALVES . . . B 41 



P-1 001.0 General 41 

P-1002.0 Definitions 41 

P-1 003.0 Fixture traps 41 



P-1 004.0 Interceptors and separators 42 

P-1005.0 Backwater valves 43 



Chapter 11 DRAINAGE PIPE CLEANOUTS 45 



P-1 101.0 General 45 

P-1102.0 Definitions 45 

P-1 103.0 Where required 45 

P-1 104.0 Underground drainage 45 

P-1 105.0 Concealed piping 45 



P-1 106.0 Direction of flow 45 

P-1107.0 Cleanout size 45 

P-1 108.0 Manholes 45 

P-1 109.0 Cleanout clearances 46 

P-1 11 0.0 Access to cleanouts 46 



TABLE OF CONTENTS 



Chapter 12 PLUMBING FIXTURES 47 



P-1201.0 General 47 

P-1202.0 Definitions 47 

P-1 203.0 Connections to plumbing system 

required 47 

P-1 204.0 Minimum plumbing facilities 47 

P-1 205.0 Accessible plumbing facilities 49 

P-1 206.0 Installation of fixtures 51 

P-1 207.0 Automatic clothes washers 52 

P-1208.0 Bathtubs 52 

P-1 209.0 Bidets 52 

P-1 21 0.0 Dishwashing machines 52 

P-1211.0 Drinking fountains 52 

P-1 21 2.0 Emergency showers and eyewash 

stations 52 



Section Page 

P-1 21 3.0 Floor drains . 52 

P-1 21 4.0 Food waste grinder units 52 

P-1 21 5.0 Garbage can washers 52 

P-1 21 6.0 Laundry trays 52 

P-1 21 7.0 Lavatories 53 

P-1 21 8.0 Showers 53 

P-1 21 9.0 Sinks . 53 

P-1220.0 Urinals 53 

P-1 221 .0 Water closets 54 

P-1 222.0 Flushing devices for water closets 

and urinals 54 

P-1 223.0 Whirlpool bathtubs 54 

P-1 224.0 Special plumbing fixtures 54 

P-1 225.0 Faucets and fixture fittings 55 



Chapter 13 HANGERS AND SUPPORTS 57 



P-1 301 .0 General 57 

P-1302.0 Material 57 

P-1 303.0 Attachment to building 57 

P-1304.0 Interval of support 57 



P-1305.0 Base of stacks 57 

P-1 306.0 Anchorage 57 

P-1 307.0 Sway bracing 57 

P-1 308.0 Parallel water distribution systems 57 



Chapter 14 HEALTH CARE PLUMBING 



59 



P-1401.0 General 59 

P-1 402.0 Definitions 59 

P-1 403.0 Special fixtures 59 



P-1 404.0 Drainage and venting 60 

P-1405.0 Water supply 61 



Chapter 15 WATER SUPPLY AND DISTRIBUTION 63 



P-1 501 .0 General 63 

P-1 502.0 Definitions 63 

P-1503.0 Water required 63 

P-1 504.0 Water service 63 

P-1 505.0 Design of building water distribution 

system 64 



P-1 506.0 Installation of the building water 

distribution system 65 

P-1 507.0 Protection of potable water supply 66 

P-1 508.0 Hot water supply system 69 

P-1 509.0 Disinfection of potable water system ... 71 



Chapter 16 INDIVIDUAL WATER SUPPLY 73 



P-1601.0 General 73 

P-1 602.0 Definitions 73 

P-1 603.0 Where required . 73 

P-1 604.0 Types of individual water supply 73 



P-1 605.0 Quantity and quality of water 73 

P-1 606.0 Protection of supply 73 

P-1 607.0 Pumping equipment 74 



Chapter 17 INSPECTION, TESTS AND MAINTENANCE 75 



P-1 701.0 General 75 

P-1702.0 Inspections 75 



P-1 703.0 Testing of plumbing systems 75 

P-1 704.0 Maintenance 76 



THE BOCA NATIONAL PLUMBING CODE/1993 

ALTERNATIVE ENGINEERED DESIGN 77 

Page Section Page 

General 77 P-1806.0 Special inspection 77 

Definitions 77 P-1 807.0 Engineered vent system 77 

Design criteria 77 P-1 808.0 Air admittance valves 78 

Submittal 77 P-1 809.0 Computerized drainage design 78 

Design approval 77 

Chapter 19 REFERENCED STANDARDS 81 

Appendix A RATES OF RAINFALL FOR VARIOUS CITIES 87 

Appendix B GAS PIPING SYSTEMS 95 



Chapter 18 


Section 


P-1801.0 ( 


P-1 802.0 I 


P-1 803.0 I 


P-1 804.0 ! 


P-1 805.0 I 



EDITORIAL CHANGES — SECOND PRINTING 

pg. 68, Section P-1 507.9.7: Entire Section P-1 507.9.7 has been renumbered and relocated as new Section P- 1507. 13.6. 
pg. 68, Section P-1 507.9.8: Section has been renumbered as Section P-1 507.9. 7. 



xu 



CHAPTER 1 



ADMINISTRATION 



SECTION P-101.0 GENERAL 

P- 101.1 Title: These regulations shall be known as the Plumbing 
Code of [name of jurisdiction] hereinafter referred to as "this 
code." 

P-101.2 Scope: The design, installation, maintenance, alteration 
and inspection of plumbing systems, including sanitary and 
storm drainage, sanitary facilities, water supplies, storm water 
and sewage disposal in buildings, shall comply with the require- 
ments of this code. 

The design and installation of gas piping, chilled water piping 
in connection with refrigeration processes and comfort cooling, 
and hot water piping in connection with building heating shall 
conform to the requirements of the mechanical code listed in 
Chapter 19. The design and installation of piping for fire 
sprinklers and standpipes shall conform to the requirements of 
the building code listed in Chapter 19. Water supply and drainage 
connections to such installations shall be made in accordance 
with the requirements of this code. 

P-101.3 Intent: This code shall be construed to secure its ex- 
pressed intent, which is to insure public health, safety and 
welfare insofar as they are affected by the installation and 
maintenance of plumbing systems. 

SECTION P-102.0 APPLICABILITY 

P-102.1 General: The provisions of this code shall apply to all 
matters affecting or relating to structures, as set forth in Section 
P-101.0. 

P-102.2 Existing structures: The legal occupancy of any struc- 
ture existing on the date of adoption of this code, or for which it 
has been heretofore approved, shall be permitted to continue 
without change except as is specifically covered in this code or 
the property maintenance code listed in Chapter 19 or as is 
deemed necessary by the code official for the general health, 
safety and welfare of the occupants and the public. 

P-102.3 Change in occupancy: It shall be unlawful to make any 
change in the occupancy of any structure which will subject the 
structure to any special provision of this code without approval 
of the code official. The code official shall certify that such 
structure meets the intent of the provisions of law governing 
building construction for the proposed new occupancy and that 
such change of occupancy does not result in any hazard to the 
public health, safety or welfare. 



P- 102.4 Alterations, additions or repairs: Alterations, addi- 
tions and repairs to any plumbing system shall conform to that 
required for a new plumbing system without requiring the exist- 
ing plumbing to comply with all of the requirements of this code. 
Alterations, additions and repairs shall not cause an existing 
plumbing system to become unsafe or adversely affect the per- 
formance of the plumbing. Where additions or alterations subject 
parts of existing systems to loads exceeding those permitted 
herein, such parts shall be made to comply with this code. 

P-102.5 Referenced standards: The standards referenced in 
this code and listed in Chapter 1 9 shall be considered part of the 
requirements of this code to the prescribed extent of each such 
reference. Where differences occur between provisions of this 
code and the referenced standards, the provisions of this code 
shall apply. 

SECTION P-103.0 REPAIRS AND MAINTENANCE 

P- 103.1 Repairs: Minor repairs or replacement of any existing 
system shall be permitted in the same manner and arrangement 
as in the existing system, provided that such repairs or replace- 
ment are not hazardous and are approved. 

P- 103.2 Maintenance: All plumbing systems, both existing and 
new, shall be maintained in a safe and sanitary condition. All 
service equipment, devices and safeguards which are required 
by this code, or which were required by a previous statute or code 
for the structure, shall be maintained in working order. 

P-103.3 Owner responsibility: The owner or the owner's desig- 
nated agent shall be responsible for the safe and sanitary main- 
tenance of the plumbing system. 

SECTION P-1 04.0 VALIDITY 

P- 104.1 Partial invalidity: In the event any part or provision of 
this code is held to be illegal or void, this shall not have the effect 
of making void or illegal any of the other parts or provisions 
thereof, which are determined to be legal; and it shall be 
presumed that this code would have been passed without such 
illegal or invalid parts or provisions. 

P- 104.2 Segregation of invalid provisions: Any invalid part of 
this code shall be segregated from the remainder of this code by 
the court holding such part invalid, and the remainder shall 
remain effective. 

P- 104.3 Existing structures: The invalidity of any provision in 
any section of this code as applied to existing buildings and 



THE BOCA NATIONAL PLUMBING CODE/1993 



structures shall not be held to affect the validity of such section 
in its application to buildings and structures hereafter erected. 

SECTION P-105.0 DEPARTMENT OF PLUMBING INSPECTION 

P- 105.1 Code official: The department of plumbing inspection 
is hereby created and the executive official in charge thereof 
shall be known as the code official. 

P- 105.2 Appointment: The code official shall be appointed by 
the chief appointing authority of the jurisdiction; and the code 
official shall not be removed from office except for cause and 
after full opportunity to be heard on specific and relevant charges 
by and before the appointing authority. 

P-105.3 Relief from personal responsibility: The code official, 
officer or employee charged with the enforcement of this code, 
while acting for the jurisdiction, shall not thereby be rendered 
liable personally, and is hereby relieved from all personal 
liability for any damage accruing to persons or property as a 
result of any act required or permitted in the discharge of official 
duties. 

Any suit instituted against any officer or employee because of 
an act performed by that officer or employee in the lawful 
discharge of duties and under the provisions of this code shall be 
defended by the legal representative of the jurisdiction until the 
final termination of the proceedings. The code official or any 
subordinate shall not be liable for costs in any action, suit or 
proceeding that is instituted in pursuance of the provisions of this 
code; and any officer of the department of plumbing inspection, 
acting in good faith and without malice, shall be free from 
liability for acts performed under any of its provisions or by 
reason of any act or omission in the performance of official duties 
in connection therewith. 

P- 105.4 Restriction of employees: An official or employee 
connected with the department of plumbing inspection, except 
one whose only connection is that of a member of the board of 
appeals established under the provisions of Section P-12I.0, 
shall not be engaged in or directly or indirectly connected with 
the furnishing of labor, materials or appliances for the construc- 
tion, alteration or maintenance of a building, or the preparation 
of construction documents thereof, unless that person is the 
owner of the building; nor shall such officer or employee engage 
in any work that conflicts with official duties or with the interests 
of the department. 

SECTION P-106.0 DUTIES AND POWERS OF THE CODE OFFICIAL 

P- 106.1 General: The code official shall enforce all of the 
provisions of this code and shall act on any question relative to 
the installation, alteration, repair, maintenance or operation of 
all plumbing systems, devices and equipment, except as other- 
wise specifically provided for by statutory requirements or as 
provided for in Sections P- 106.2 through P- 106.8. 

P-106.2 Applications and permits: The code official shall 
receive applications and issue permits for the installation and 
alteration of plumbing, inspect the premises for which such 
permits have been issued and enforce compliance with the 
provisions of this code. 

P-106.3 Notices and orders: The code official shall issue all 
necessary notices or orders to ensure compliance with this code. 



P- 106.4 Inspections: The code official shall make all of the 
required inspections, or shall accept reports of inspection by 
approved agencies or individuals. All reports of such inspections 
shall be in writing and be certified by a responsible officer of 
such approved agency or by the responsible individual. The code 
official is authorized to engage such expert opinion as deemed 
necessary to report upon unusual technical issues that arise, 
subject to the approval of the appointing authority. 

P-106.5 Identification: The code official shall carry proper 
identification when inspecting structures or premises in the 
performance of duties under this code. 

P-106.6 Rule-making authority: The code official shall have 
authority as necessary in the interest of public health, safety and 
general welfare, to adopt and promulgate rules and regulations 
to interpret and implement the provisions of this code to secure 
the intent thereof and to designate requirements applicable be- 
cause of local climatic or other conditions. Such rules shall not 
have the effect of waiving structural or fire performance require- 
ments specifically provided for in this code, or of violating 
accepted engineering practice involving public safety. 

P- 106.7 Department records: The code official shall keep 
official records of applications received, permits and certificates 
issued, fees collected, reports of inspections, and notices and 
orders issued. Such records shall be retained in the official 
records as long as the building or structure to which such records 
relate remains in existence unless otherwise provided for by 
other regulations. 

P-106.8 Annual report: At least annually, the code official shall 
submit to the chief authority of the jurisdiction a written state- 
ment of operations in the form and content as shall be prescribed 
by such authority. 

SECTION P-107.0 APPROVAL 

P- 107.1 Approved materials and equipment: All materials, 
equipment and devices approved by the code official shall be 
constructed and installed in accordance with such approval. 

P-107.2 Modifications: Where there are practical difficulties 
involved in carrying out the provisions of this code, the code 
official shall have the right to vary or modify such provisions 
upon application by the owner or the owner's representative, 
provided that the spirit and intent of the law is observed and that 
the public health, safety and welfare is assured. 

P-107.2.1 Records: The application for modification and the 
final decision of the code official shall be in writing and shall 
be officially recorded with the application for the permit in 
the permanent records of the department of plumbing inspec- 
tion. 

P- 107.3 Material and equipment reuse: Materials, equipment 
and devices shall not be reused unless such elements have been 
reconditioned, tested and placed in good and proper working 
condition and approved. 

P- 107.4 Alternative materials and equipment: The provisions 
of this code are not intended to prevent the installation of any 
material or to prohibit any method of construction not specifi- 
cally prescribed by this code, provided that any such alternative 
has been approved. An alternative material or method of con- I 



ADMINISTRATION 



struction shall be approved where the code official finds that the 
proposed design is satisfactory and complies with the intent of 
the provisions of this code, and that the material, method or work 
offered is, for the purpose intended, at least the equivalent of that 
prescribed in this code in quality, strength, effectiveness, 
fireresistance, durability and safety. 

P- 107.4.1 Research and investigations: Sufficient technical 
data shall be submitted by the applicant to substantiate the 
proposed installation of any material, assembly or manufac- 
turer-engineered plumbing components, equipment or sys- 
tems. If it is determined that the evidence submitted is 
satisfactory proof of performance for the proposed installa- 
tion, the code official shall approve such alternative subject 
to the requirements of this code. The costs of all tests, reports 
and investigations required under these provisions shall be 
paid for by the applicant. 

SECTION P-108.0 APPLICATION FOR PERMIT 

P-108.1 Permit required: Plumbing work shall not be com- 
menced until a permit for such work has been issued by the code 
official. A permit is not required for repairs that involve only the 
working parts of a faucet or valve, the clearance of stoppages, or 
the repairing or replacement of defective faucets or valves, 
provided that alterations are not made in the existing piping or 
fixtures. 

P- 108.2 Form: The application for a permit for plumbing work 
shall be made in such written form as the code official prescribes 
and shall be accompanied by the required fee as prescribed in 
Section P- 11 3.0 and a description of the proposed plumbing 
work. 

P- 108.3 By whom application is made: The application for a 
permit shall be made by the owner or lessee of a structure, or the 
agent of either, or by the registered design professional 
employed in connection with the proposed work or the contractor 
employed to perform the work. The applicant shall meet all 
qualifications established by rules promulgated with this code or 
by ordinance, resolution or statute. The full names and addresses 
of the owner, lessee, applicant and the responsible officers, if the 
owner or lessee is a corporate body, shall be stated in the 
application. 

P- 108.4 Description of work: The applicant shall list the num- 
ber of fixtures of each type to be installed, the location of the 
work, and the occupancy of the building in which the work is to 
be performed. 

P- 108.5 Construction documents: The application for a permit 
shall be accompanied by not less than two sets of construction 
documents. The code official is permitted to waive the require- 
ments for filing construction documents where the work in- 
volved is of a minor nature. When the quality of the materials is 
essential for conformity to this code, specific information shall 
be given to establish such quality, and this code shall not be cited, 
or the term "legal" or its equivalent used as a substitute for 
specific information. 

P-108.5.1 Details: Construction documents shall include 
floor plans and a plumbing riser diagram. The construction 
documents shall indicate the direction of flow, pipe size, slope 
of horizontal piping, elevations, drainage fixture unit loads of 



both stacks and drains in the drain, waste and vent systems, 
and the supply fixture unit load for the water system and any 
branch supplies which serve more than one plumbing fixture, 
appliance or hose outlet. 

P-108.6 Site plan: There shall also be filed a site plan showing 
the location of water service and sewer connections with respect 
to any building in which a plumbing system is to be installed. 
Vent stack terminations shall be shown with respect to building 
ventilation openings that could al low introduction of sewer gases 
into the building or any adjacent building. 

P- 108.6.1 Private sewage disposal system: The site plan 
shall indicate the location of a private sewage disposal system 
where a public sewer is not available. All technical data and 
soil data required by the private sewage disposal code listed 
in Chapter 19 shall be submitted with the site plan. 

P- 108.7 Amendments to application: Subject to the limitations 
of Section P- 108.8, amendments to the construction documents, 
application or other records accompanying the same shall be 
filed at any time before completion of the work for which the 
permit is sought or issued. Such amendments shall be deemed 
part of the original application and shall be filed therewith. 

P- 108.8 Time limitation of application: An application for a 
permit for any proposed work shall be deemed to have been 
abandoned six months after the date of filing, unless such ap- 
plication has been diligently prosecuted or a permit shall have 
been issued; except that the code official shall grant one or more 
extensions of time for additional periods not exceeding 90 days 
each, if there is reasonable cause. 

SECTION P-1 09.0 PERMITS 

P- 109.1 Action on application: The code official shall examine 
or cause to be examined all applications for permits, and amend- 
ments thereto within a reasonable time after filing. If the applica- 
tion or the construction documents do not conform to the 
requirements of all pertinent laws, the code official shall reject 
such application in writing, stating the reasons therefor. If the 
code official is satisfied that the proposed work conforms to the 
requirements of this code and all laws and ordinances applicable 
thereto, the code official shall issue a permit therefor as soon as 
practicable. A plumbing permit shall not be transferable. 

P- 109.2 Suspension of permit: Any permit issued shall become 
invalid if the authorized work is not commenced within six 
months after issuance of the permit, or if the authorized work is 
suspended or abandoned for a period of six months after the time 
of commencing the work. 

P- 109.3 Previous approvals: This code shall not require 
changes in the construction documents or plumbing system of a 
building for which a lawful permit has been heretofore issued or 
otherwise lawfully authorized, and the installation of which shall 
have been actively prosecuted within 90 days after the effective 
date of this code and is completed with dispatch. 

P- 109.4 Signature to permit: The code official's signature shall 
be attached to every permit; or the code official shall authorize 
a subordinate to affix such signature thereto. 

P- 109.5 Approved construction documents: The code official 
shall stamp or endorse in writing both sets of construction 



THE BOCA NATIONAL PLUMBING CODE/1993 



documents "Approved," and one set of the approved construc- 
tion documents shall be retained by the code official and the other 
set shall be kept at the building site, open to inspection of the 
code official at all reasonable times. 

P-109.6 Revocation of permit: The code official shall revoke a 
permit or approval issued under the provisions of this code in 
case of any false statement or misrepresentation of fact in the 
| application or on the construction documents upon which the 
permit or approval was based. 

P-109.7 Approval in part: The code official is authorized to 
issue a permit for the installation of part of a plumbing system 
I before the construction documents for the whole system have 
been submitted, provided that adequate information and detailed 
statements have been filed complying with all of the pertinent 
requirements of this code. The holder of such permit shall 
proceed at the holder's own risk with the work and without 
assurance that a permit for the entire system will be granted. 

P-109.8 Posting of permit: A true copy of the permit shall be 
kept on the site of operations, open to public inspection during 
the entire time of prosecution of the work and until the comple- 
tion of the same. 

P- 109.9 Notice of start: At least 24-hour notice of start of work 
under a permit shall be given to the code official. 

SECTION P-110.0 DEMOLITION OF STRUCTURES 

P-110.1 Service connections: Before a structure is demolished 
or removed, the owner or agent shall notify all utilities having 
service connections within the structure such as water, electric, 
gas, sewer and other connections. A permit to demolish or 
remove a structure shall not be issued until a release is obtained 
from the utilities, stating that their respective service connections 
and appurtenant equipment, such as meters and regulators, have 
been removed or sealed and plugged in an approved manner. 

SECTION P-111 .0 MOVED STRUCTURES 

P- 111.1 General: Before any structure that has been moved in 
the jurisdiction is occupied, the plumbing system shall be in- 
spected and tested for safe operation and compliance with the 
requirements of this code. 

SECTION P-112.0 CONDITIONS OF PERMIT 

P-112.1 Payment of fees: A permit shall not be issued until the 
fees prescribed in Section P-l 1 3.0 have been paid. 

P-112.2 Compliance with code: The permit shall be a license 
to proceed with the work and shall not be construed as authority 
to violate, cancel or set aside any of the provisions of this code, 
except as specifically stipulated by modification or legally 
granted variation as described in the application. 

P-112.3 Compliance with permit: All work shall conform to 
the approved application and the approved construction docu- 
ments for which the permit has been issued and any approved 
amendments to the approved application or the approved con- 
struction documents. 



SECTION P-113.0 FEES 

P-113.1 General: A permit to begin work for new construction 
or alteration shall not be issued until the prescribed fees shall 
have been paid nor shall an amendment to a permit necessitating 
an additional fee because of the additional work involved be 
approved until the additional fee has been paid. 

P- 113.2 Fee schedule: The fees for all plumbing work shall be 
as indicated in the following schedule. 

[JURISDICTION TO INSERT APPROPRIATE SCHEDULE] 

SECTION P-114,0 INSPECTION 

P-114.1 Required inspections: After issuing a permit, the code 
official shall conduct inspections from time to time during and 
upon completion of the work for which a permit has been issued. 
A record of all such examinations and inspections and of all 
violations of this code shall be maintained by the code official. 

P- 114.1.1 Approved inspection agencies: The code official 
shall accept reports of approved inspection agencies provided 
such agencies satisfy the requirements as to qualifications and 
reliability. 

P-114.1.2 Evaluation and follow-up inspection services: 

Prior to the approval of a closed, prefabricated plumbing 
system and the issuance of a plumbing permit, the code 
official shall require the submittal of an evaluation report on 
each prefabricated plumbing system, indicating the complete 
details of the plumbing system, including a description of the 
system and its components, the basis upon which the plumb- 
ing system is being evaluated, test results and similar infor- 
mation, and other data as necessary for the code official to 
determine conformance to this code. 

P- 114.1.2.1 Evaluation service: The code official shall 
designate the evaluation service of an approved agency as 
the evaluation agency, and review such agency's evalua- 
tion report for adequacy and conformance to this code. 

P-114.1. 2.2 Follow-up inspection: Except where ready 
access is provided to all plumbing systems, service equip- 
ment and accessories for complete inspection at the site 
without disassembly or dismantling, the code official shall 
conduct the frequency of in-plant inspections necessary to 
assure conformance to the approved evaluation report or 
shall designate an independent, approved inspection agen- 
cy to conduct such inspections. The inspection agency 
shall furnish the code official with the follow-up inspec- 
tion manual and a report of inspections upon request, and 
the plumbing system shall have an identifying label per- 
manently affixed to the system indicating that factory 
inspections have been performed. 

P-114.1.2.3 Test and inspection records: All required test 
and inspection records shall be available to the code offi- 
cial at all times during the fabrication of the plumbing 
system and the erection of the building; or such records as 
the code official designates shall be filed. 

P- 114.2 Final inspections: Upon completion of the plumbing 
work and before final approval is given, a final inspection shall 
be made. All violations of the approved construction documents I 



ADMINISTRATION 



and permit shall be noted, and the holder of the permit shall be 
notified of the discrepancies. 

P-114.3 Right of entry: The code official shall have the 
authority to enter at any reasonable time any structure or 
premises for which a permit has been issued and for which a 
notice of approval has not been issued in accordance with 
Section P-l 18.0. 

For all other structures or premises, when the code official has 
reasonable cause to believe that a code violation exists, the code 
official is authorized to enter the structure or premises at 
reasonable times to inspect. Prior to entering into a space not 
otherwise open to the general public, the code official shall make 
a reasonable effort to locate the owner or other person having 
charge or control of the structure or premises, present proper 
identification and request entry. If requested entry is refused or 
not obtained, the code official shall pursue recourse as provided 
by law. 

P-114.4 Coordination of inspections: Whenever in the enforce- 
ment of this code or another code or ordinance, the responsibility 
of more than one code official of the jurisdiction is involved, it 
shall be the duty of the code officials involved to coordinate their 
inspections and administrative orders as fully as practicable so 
that the owners and occupants of the structure shall not be 
subjected to visits by numerous inspectors or multiple or con- 
flicting orders. Whenever an inspector from any agency or 
department observes an apparent or actual violation of some 
provision of some law, ordinance or code not within the 
inspector's authority to enforce, the inspector shall report the 
findings to the code official having jurisdiction. 

SECTION P-115.0 WORKMANSHIP 

P-115.1 General: All work shall be conducted, installed and 
completed in a workmanlike and approved manner so as to 
secure the results intended by this code. 

SECTION P-116.0 VIOLATIONS 

P-116.1 Unlawful acts: It shall be unlawful for any person, firm 
or corporation to erect, construct, alter, repair, remove, demolish 
or utilize any plumbing system, or cause same to be done, in 
conflict with or in violation of any of the provisions of this code. 

P-116.2 Notice of violation: The code official shall serve a 
notice of violation or order to the person responsible for the 
erection, installation, alteration, extension, repair, removal or 
demolition of plumbing work in violation of the provisions of 
this code, or in violation of a detail statement or the approved 
construction documents thereunder, or in violation of a permit 
or certificate issued under the provisions of this code. Such order 
shall direct the discontinuance of the illegal action or condition 
and the abatement of the violation. 

P-116.3 Prosecution of violation: If the notice of violation is 
not complied with promptly, the code official shall request the 
legal counsel of the jurisdiction to institute the appropriate 
proceeding at law or in equity to restrain, correct or abate such 
violation, or to require the removal or termination of the unlawful 
occupancy of the structure in violation of the provisions of this 
code or of the order or direction made pursuant thereto. 



P-116.4 Violation penalties: Any person who shall violate a 
provision of this code or shall fail to comply with any of the 
requirements thereof or who shall erect, install, alter or repair 
plumbing work in violation of the approved construction docu- 
ments or directive of the code official, or of a permit or certificate 
issued under the provisions of this code, shall be guilty of a 
[SPECIFY OFFENSE], punishable by a fine of not more than 
[amount] dollars or by imprisonment not exceeding [NUMBER 
OF DAYS], or both such fine and imprisonment. Each day that a 
violation continues after due notice has been served shall be 
deemed a separate offense. 

P- 116.5 Abatement of violation: The imposition of the penalties 
herein prescribed shall not preclude the legal officer of the 
jurisdiction from instituting appropriate action to prevent unlaw- 
ful construction or to restrain, correct or abate a violation, or to 
prevent illegal occupancy of a building, structure or premises, or 
to stop an illegal act, conduct, business or utilization of the 
plumbing on or about any premises. 

SECTION P-117.0 STOP WORK ORDER 

P- 117.1 Notice: Upon notice from the code official that work on 
any structure is being prosecuted contrary to the provisions of 
this code or in an unsafe and dangerous manner, such work shall 
be immediately stopped. The stop work order shall be in writing 
and shall be given to the owner of the property involved, or to 
the owner's agent, or to the person doing the work. The stop work 
order shall state the conditions under which work will be per- 
mitted to resume. 

P-117.2 Unlawful continuance: Any person who shall continue 
any work in or about the structure after having been served with 
a stop work order, except such work as that person is directed to 
perform to remove a violation or unsafe condition, shall be liable 
to a fine of not less than [amount] dollars or more than 
[AMOUNT] dollars. 

SECTION P-118.0 NOTICE OF APPROVAL 

P- 118.1 Approval: After the prescribed tests and inspections 
indicate that the work complies in all respects with this code, a 
notice of approval shall be issued by the code official. 

P- 118.2 Temporary occupancy: Upon the request of the holder 
of a permit, the code official shall issue a temporary authoriza- 
tion before the entire work covered by the permit is completed, 
provided that such portion or portions will be put into service 
safely prior to full completion of the structure without endanger- 
ing public health or welfare. 

SECTION P-119.0 UNSAFE CONDITIONS 

P- 119.1 General: All plumbing installations, regardless of type, 
which are unsanitary or which constitute a hazard to health, 
safety or welfare are hereby declared illegal and shall be abated 
by repair and rehabilitation or removal. 

P- 119.2 Record: The code official shall cause a report to be filed 
on an unsafe condition. The report shall state the occupancy of 
the structure and the nature of the unsafe condition. 

P- 119.3 Notice: If an unsafe condition is found, the code official 
shall serve on the owner, agent or person in control of the 



THE BOCA NATIONAL PLUMBING CODE/1993 



structure, a written notice that describes the condition deemed 
unsafe and specifies the required repairs or improvements to be 
made to abate the unsafe condition, or that requires the unsafe 
plumbing to be removed within a stipulated time. Such notice 
shall require the person thus notified to declare immediately to 
the code official acceptance or rejection of the terms of the order. 

P-H9.4 Method of service: Such notice shall be deemed proper- 
ly served if a copy thereof is (a) delivered to the owner personal- 
ly; or (b) sent by certified or registered mail addressed to the 
owner at the last known address with the return receipt requested. 
If the certified or registered letter is returned showing that the 
letter was not delivered, a copy thereof shall be posted in a 
conspicuous place in or about the structure affected by such 
notice. Service of such notice in the foregoing manner upon the 
owner's agent or upon the person responsible for the structure 
shall constitute service of notice upon the owner. 

P-119.5 Restoration: The plumbing that is determined to be 
unsafe by the code official is permitted to be restored to a safe 
condition. To the extent that repairs, alterations or additions are 
made during the restoration of the structure, such repairs, altera- 
tions and additions shall comply with the requirements of Sec- 
tion P- 102.4 and P- 103.0. 

P- 119.6 Disregard of notice: Upon refusal or neglect of the 
person served with an unsafe notice to comply with the require- 
ments of the order to abate the unsafe condition, the legal counsel 
of the jurisdiction shall be advised of all the facts in order to 
pursue recourse provided by law. 

SECTION P-120.0 EMERGENCY MEASURES 

P- 120.1 Imminent danger: When, in the opinion of the code 
| official, there is imminent danger of contamination or a sanita- 
tion hazard which would endanger life, the code official hereby 
is authorized and empowered to order and require the occupants 
to vacate a structure forthwith. The code official shall cause to 
be posted at each entrance to such structure a notice reading as 
follows: "This Structure is Unsafe and its Occupancy has been 
Prohibited by the Code Official." It shall be unlawful for any 
person to enter such structure except for the purpose of making 
the required repairs or demolition. 

SECTION P-121.0 MEANS OF APPEAL 

P- 121.1 Application for appeal: Any person shall have the right 
to appeal a decision of the code official to the board of appeals. 
An application for appeal shall be based on a claim that the true 
intent of this code or the rules legally adopted thereunder have 
been incorrectly interpreted, the provisions of this code do not 
fully apply, or an equally good or better form of construction is 
proposed. The application shall be filed on a form obtained from 
the code official within 20 days after the notice was served. 

P-121.2 Membership of board: The board of appeals shall 
consist of five members appointed by the chief appointing 
authority as follows: one for five years, one for four years, one 
for three years, one for two years, and one for one year. There- 
after, each new member shall serve for five years or until a 
successor has been appointed. 



P-121.2.1 Qualifications: The board of appeals shall consist 
of five individuals, one from each of the following professions 
or disciplines. 

1 . Registered design professional that is a registered arch i- 
tect; or a builder or superintendent of building construc- 
tion with at least ten-years experience, five of which 
shall have been in responsible charge of work. 

2. Registered design professional with structural engi- 
neering or architectural experience. 

3. Registered design professional with mechanical and 
plumbing engineering experience; or a mechanical and 
plumbing contractor with at least ten-years experience, 
five of which shall have been in responsible charge of 
work. 

4. Registered design professional with electrical engineer- 
ing experience; or an electrical contractor with at least 
ten-years experience, five of which shall have been in 
responsible charge of work. 

5. Registered design professional with fire protection en- 
gineering experience; or a fire protection contractor 
with at least ten-years experience, five of which shall 
have been in responsible charge of work. 

P- 121.2.2 Alternate members: The chief appointing 
authority shall appoint two alternate members who shall be 
called by the board chairman to hear appeals during the 
absence or disqualification of a member. Alternate members 
shall possess the qualifications required for board member- 
ship, and shall be appointed for five years or until a successor 
has been appointed. 

P- 121.2.3 Chairman: The board shall annually select one of 
its members to serve as chairman. 

P-121.2.4 Disqualification of member: A member shall not 
hear an appeal in which that member has any personal, 
professional or financial interest. 

P- 121.2.5 Secretary: The chief administrative officer shall 
designate a qualified clerk to serve as secretary to the board. 
The secretary shall file a detailed record of all proceedings in 
the office of the chief administrative officer. 

P-121.2.6 Compensation of members: Compensation of 
members shall be determined by law. 

P-121.3 Notice of meeting: The board shall meet upon notice 
from the chairman, within ten days of the filing of an appeal, or 
at stated periodic meetings. 

P- 121.4 Open hearing: All hearings before the board shall be 
open to the public. The appellant, the appellant's representative, 
the code official and any person whose interests are affected shall 
be given an opportunity to be heard. 

P- 121.4.1 Procedure: The board shall adopt and make avail- 
able to the public through the secretary procedures under 
which a hearing will be conducted. The procedures shall not 
require compliance with strict rules of evidence, but shall 
mandate that only relevant information be received. 

P-121.5 Postponed hearing: When five members are not 
present to hear an appeal, either the appellant or the appellant's 
representative shall have the right to request a postponement of 
the hearing. 



ADMINISTRATION 



P- 121.6 Board decision: The board shall modify or reverse the 
decision of the code official by a concurring vote of three 
members. 

P-121.6.1 Resolution: The decision of the board shall be by 
resolution. Certified copies shall be furnished to the appellant 
and to the code official. 

P- 121.6.2 Administration: The code official shall take im- 
mediate action in accordance with the decision of the board. 

P- 121.7 Court review: Any person, whether or not a previous 
party of the appeal, shall have the right to apply to the appropriate 
court for a writ of certiorari to correct errors of law. Application 
for review shall be made in the manner and time required by law 
following the filing of the decision in the office of the chief 
administrative officer. 



CHAPTER 2 



DEFINITIONS 



SECTION P-201.0 GENERAL 

P-201.1 Scope: Unless otherwise expressly stated, the following 
words and terms shall, for the purposes of this code, have the 
meanings shown in this chapter. 

P-201.2 Interchangeability: Words stated in the present tense 
include the future; words stated in the masculine gender include 
the feminine and neuter; the singular number includes the plural 
and the plural the singular. 

P-201.3 Terms defaned in other codes: Where terms are not 
defined in this code and are defined in the building or mechanical 
codes listed in Chapter 19, such terms shall have the meanings 
ascribed to them as in those codes. 

P-201.4 Terms not defined: Where terms are not defined 
through the methods authorized by this section, such terms shall 
have ordinarily accepted meanings such as the context implies. 

SECTION P-202.0 GENERAL DEFBNETIONS 

Accepted engineering practice: That which conforms to ac- 
cepted principles, tests or standards of nationally recognized 
technical or scientific authorities. 

Access (to): That which enables a fixture, appliance or equip- 
ment to be reached by ready access or by a means that first 
requires the removal or movement of a panel, door or similar 
obstruction (see "Ready access"). 

Adapter fitting: See Section P-502.0. 

Administrative authority: The individual official, board, 
department, or agency established and authorized by a state, 
county, city or other political subdivision created by law to 
administer and enforce the provisions of the plumbing code. 

Air admittance valve: See Section P- 1808.2. 

Air break (drainage system): See Section P-702.0. 

Air gap (drainage system): See Section P-702.0. 

Air gap (water distribution system): See Section P- 1502.0. 

Alternative engineered design: See Section P- 1802.0. 

Anchors: See "Supports." 

Antisiphon: See Section P- 1222.2. 

Approved: Approved by the code official or other authority 

having jurisdiction. 

Area drain: See Section P-802.0. 



Aspirator: See Section P- 1402.0. 

Backflow 

Drainage: See Section P- 1005.2. 

Water supply system: See Section P- 1507.2. 

Backflow connection: See Section P- 1507.2. 

Backflow preventer: See Section P- 1507.2. 

Backwater valve: See Section P- 1005.2. 

Ball cock: See Section P- 1222.2. 

Bathroom group: See Section P-602.0. 

Bedpan steamer or boiler: See Section P- 1402.0. 

Bedpan washer and sterilizer: See Section P- 1402.0. 

Bedpan washer hose: See Section P- 1402.0. 

Branch: See Section P-602.0. 

Branch interval: See Section P-602.0. 

Branch vent: See Section P-902.0. 

Building: Any structure occupied or intended for supporting or 
sheltering any occupancy. 

Building drain: See Section P-602.0. 
Combined: See Section P-802.0. 
Sanitary: See Section P-602.0. 
Storm: See Section P-802.0. 

Building sewer: See Section P-602.0. 
Combined: See Section P-802.0. 
Sanitary: See Section P-602.0. 
Storm: See Section P-802.0. 

Building subdrain: See Section P-602.0. 

Building trap: See Section P- 1002.0. 

Circuit vent: See Section P-902.0. 

Cistern: See Section P- 1602.0. 

Cleanout: See Section P-l 102.0. 

Code: These regulations, subsequent amendments thereto, or 
any emergency rule or regulation which the administrative 
authority having jurisdiction has lawfully adopted. 

Code official: The officer or other designated authority charged 
with the administration and enforcement of this code, or a 
duly authorized representative. 



THE BOCA NATIONAL PLUMBING CODE/1993 



Combination fixture: See Section P-l 002.0. 

Combined building drain: See "Building drain, combined." 

Combined building sewer: See "Building sewer, combined " 

Conductor: See Section P-802.0. 

Construction documents: All of the written, graphic and picto- 
rial documents prepared or assembled for describing the 
design, location and physical characteristics of the elements 
of the project necessary for obtaining a building permit. The 
construction drawings shall be drawn to an appropriate scale. 

Contamination: See Section P- 1507.2. 

Critical level (C-L): See Section P-l 507.2. 

Cross connection: See Section P-l 507.2. 

Deadend: See Section P-602.0. 

Developed length: See Section P- 902.0. 

Drain: See Section P-602.0. 

Drainage fittings: See Section P-602.0. 

Drainage system: See Section P-602.0. 
Building gravity: See Section P-602.0. 
Sanitary: See Section P-602.0. 
Storm: See Section P-802.0. 

Effective opening: See Section P-l 507.2. 

Emergency floor drain: See Section P-602.0. 

Essentially nontoxic transfer fluids: See Section P-l 507.2. 

Essentially toxic transfer fluids: See Section P-1507.2. 

Existing work: Any plumbing system regulated by this code 
which was legally installed prior to the effective date of this 
code, or for which a permit to install has been issued. 

Faucet: See Section P-l 225.2. 

Fixture: See "Plumbing fixture." 

Fixture branch: See Section P-902.0. 

Fixture drain: See Section P-902.0. 

Fixture fitting: See Section P-l 225.2. 

Fixture supply: See Section P-1502.0. 

Fixture unit 

Drainage (dfu): See Section P-602.0. 

Flood level rim: See Section P-1507.2. 

Flow pressure: See Section P-1502.0. 

Flushometer tank: See Section P-1222.2. 

Flushometer valve: See Section P-1222.2. 

Full-open valve: See Section P-1502.0. 

Hangers: See "Supports." 

Horizontal branch drain: See Section P-902.0. 

Horizontal pipe: Any pipe or fitting which makes an angle of 
less than 45 degrees (0.79 rad) with the horizontal. 

Hot water: See Section P-l 508.2. 



House trap: See "Building trap." 

Indirect waste pipe: See Section P-702.0. 

Individual sewage disposal system: See Section P-304.2. 

Individual vent: See Section P-902.0. 

Individual water supply: See Section P-l 602.0. 

Interceptor: See Section P-l 002.0. 

Joint 

Expansion: See Section P-502.0. 
Flexible: See Section P-502.0. 
Mechanical: See "Mechanical joint " 
Slip: See Section P-502.0. 

Leader: See Section P-802.0. 

Local vent stack: See Section P- 1.402.0. 

Main: The principal pipe artery to which branches are con- 
nected. 

Main vent: See Section P-902.0. 

Manifold: See "Plumbing appurtenance." 

Mechanical joint: See Section P-502.0. 

Nonpotable water: See Section P-1502.0. 

Nuisance: Public nuisance as known as common law or in equity 
jurisprudence; whatever is dangerous to human life or 
detrimental to health; whatever structure or premises is not 
sufficiently ventilated, sewered, drained, cleaned or lighted, 
with respect to its intended occupancy; and whatever renders 
the air or human food or drink or water supply unwholesome. 

Occupancy: The purpose for which a building or portion thereof 
is utilized or occupied. 

Offset: See Section P-602.0. 

Open air: Outside the structure. 

Plumbing: The practice, materials and fixtures utilized in the 
installation, maintenance, extension and alteration of all 
piping, fixtures, plumbing appliances and plumbing appur- 
tenances, within or adjacent to any structure, in connection 
with sanitary drainage or storm drainage facilities; venting 
systems; and public or private water supply systems. 

Not included in this definition are installations of gas 
piping; chilled water piping in connection with refrigeration, 
process and comfort cooling; hot water piping in connection 
with building heating; and piping for fire protection systems. 

Plumbing appliance: See Section P- 1202.0. 

Plumbing appurtenance: See Section P-l 202.0. 

Plumbing Fixture: See Section P-l 202.0. 

Plumbing system: Includes the water supply and distribution 
pipes; plumbing fixtures and traps; soil, waste and vent pipes; 
and sanitary and storm sewers and building drains; in addition 
to their respective connections, devices and appurtenances 
within a structure or premises. 

Potable water: See Section P-1502.0. 

Pressure gradient monitor: See Section P-1507.2. 



10 



0EFBIS51T10NIS 



Private: See Section P- 1202.0. 

Public or public utilization: See Section P- 1202.0. 

Public water main: See Section P-304.2. 

Quick-closing valve: See Section P- 1502.0. 

Ready access: That which enables a fixture, appliance or equip- 
ment to be directly reached without requiring the removal or 
movement of any panel, door or similar obstruction. 

Reduced pressure principle backflow preventer: See Section 
P- 1507.2. 

Registered design professional: An architect or engineer, 
registered or licensed to practice professional architecture or 
engineering, as defined by the statutory requirements of the 
professional registration laws of the state in which the project 
is to be constructed. 

Relief valve 

Pressure relief valve: See Section P-l 502.0. 
Temperature and pressure relief (T&P) valve: See Section 
P-l 502.0. 
Temperature relief valve: See Section P-l 502.0. 

Relief vent: See Section P-902.0. 

Rim: See Section P-l 507.2. 

Riser: See "Water pipe, riser." 

Roof drain: See Section P-802.0. 

Rough-in: Parts of the plumbing system that are installed prior 
to the installation of fixtures. This includes drainage, water 
supply, vent piping and the necessary fixture supports. 

Separator: See "Interceptor." 

Sewage: Any liquid waste containing animal or vegetable matter 
in suspension or solution, including liquids containing chemi- 
cals in solution. 

Sewage ejectors: See Section P-602.0. 

Sewer 

Building sewer: See Section P-602.0. 
Public sewer: See Section P-602.0. 
Sanitary sewer: See Section P-802.0. 
Storm sewer: See Section P-802.0. 

Slope: The fall (pitch)of a line of pipe in reference to a horizontal 
plane. In drainage, the slope is expressed as the fall in a 
fraction of an inch per foot length of pipe. 

Soil pipe: A pipe that conveys sewage containing fecal matter to 
the building drain or building sewer. 

Stack: A general term for any vertical line of soil, waste, vent or 
inside conductor piping, except vertical vent branches that do 
not extend through the roof and which pass through less than 
two stories before being reconnected to a vent stack or stack 
vent. 

Stack vent: See Section P-902.0. 

Sterilizer 

Boiling type: See Section P- 1402.0. 
Instrument: See Section P-l 402.0. 



Pressure (autoclave): See Section P-l 402.0. 

Pressure Instrument washer sterilizer: See Section P- 

1402.0. 

Utensil: See Section P- 1402.0. 

Water: See Section P-l 402.0. 

Sterilizer vent: See Section P- 1402.0. 

Storm drain: See "Drainage system, storm." 

Structure: That which is built or constructed or a portion there- 
of. 

Subsoil drain: See Section P-802.0. 

Sump: See Section P-602.0. 

Sump pump: See Section P-802.0. 

Sump vent: See Section P-902.0. 

Supports: Devices for supporting and securing pipe, fixtures 
and equipment. 

Swimming pool: See Section P-702.0. 

Tempered water: See Section P-l 508.2. 

Trap: See Section P-l 002.0. 

Trap seal: See Section P-1002.0. 

Vacuum: Any pressure less than that exerted by the atmosphere. 

Vacuum breaker: See Section P-l 507.2. 

Vent pipe: See Section P-902.0. 

Vent stack: See Section P-902.0. 

Vent system: See Section P-902.0. 

Vertical pipe: Any pipe or fitting which makes an angle of 45 
degrees (0.79 rad) or more with the horizontal. 

Wall-hung water closet: See Section P- 1202.0. 

Waste: The discharge from any fixture, appliance, area or ap- 
purtenance, which does not contain fecal matter. 

Waste pipe: A pipe that conveys only waste. 

Water-hammer arrestor: See Section P-l 502.0. 

Water heater: See Section P-l 508.2. 

Water main: See Section P-304.2. 

Water outlet: See Section P- 1 502.0. 

Water pipe 

Riser: See Section P-l 502.0. 

Water distribution pipe: See Section P-l 502.0. 

Water service pipe: See Section P- 1 502.0. 

Water supply system: See Section P- 1502.0. 



11 



THE BOCA NATIONAL PLUMBING CODE/1993 



Well 

Bored: See Section P- 1602.0. 
Drilled: See Section P- 1602.0. 
Driven: See Section P- 1602.0. 
Dug: See Section P- 1602.0. 

Whirlpool bathtub: See Section P- 1202.0. 

Yoke vent: See Section P-902.0. 



12 



CHAPTER 3 



GENERAL REGULATIONS 



SECTION P-301.0 GENERAL 

P-301.1 Scope: This chapter contains general regulations 
regarding the installation of plumbing, including: provisions for 
health and safety; the connection to public systems where avail- 
able; the exclusion of certain wastes detrimental to the sewage 
system; and the matters of corrosion, freezing, trenching, bed- 
ding, tunneling and backfilling. 

SECTION P-302.0 HEALTH AND SAFETY 

P-302.1 General: Where a health or safety hazard exists on a 
premises by reason of an existing plumbing installation, or lack 
thereof, the owner or the owner's agent shall install additional 
plumbing or make such corrections as are necessary to abate such 
nuisance and bring the plumbing installation within the 
provisions of this code. 

P-302.2 Safety: Any part of a structure or premises which is 
changed, altered or required to be replaced as a result of the 
installation, alteration, renovation or replacement of a plumbing 
system, or any part thereof, shall be left in a safe, nonhazardous 
condition. 

P-302.3 Cutting or notching: A structural member shall not be 
cut, notched or pierced in excess of the limitations specified in 
the building code listed in Chapter 19, unless proven safe by a 
structural analysis prepared by the registered design professional 
of record. 

P-302.4 Protection of footings: Trenching installed parallel to 
footings shall not extend below the line of a45-degree (0,79 rad) 
angle to the loadbearing plane of the footing. 

SECTION P-303.0 CONNECTIONS TO PLUMBING SYSTEMS 
REQUIRED 

P-303.1 General: Every plumbing fixture, drain, appliance or 
appurtenance thereto which is to receive water or waste, or 
discharge any liquid wastes or sewage, shall discharge to the 
sanitary drainage system of the structure in accordance with the 
requirements of this code. 

SECTION P-304.0 CONNECTION TO PUBLIC WATER 
AND SEWER SYSTEM 

P-304.1 General: The water distribution and drainage system 
of any structure in which plumbing fixtures are installed shall be 
connected to a public water main and sewer, respectively, where 
available. Where a public water main is not available, an in- 
dividual water supply shall be provided. Where a public sewer 



is not available, a private sewage disposal system that conforms 
to the private sewage disposal code listed in Chapter 19 shall be 
provided. 

P-304.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Individual sewage disposal system: A system for disposal of 
domestic sewage by means of a septic tank, cesspool or 
mechanical treatment, designed for utilization apart from a 
public sewer to serve a single establishment or building. 

Public water main: A water supply pipe for public utilization 
controlled by public authority. 

Water main: A water supply pipe for public utilization. 

P-304.3 Public systems available: A public water main or 
public sewer system shall be considered available to a structure 
where the structure is located within [number] feet of the public 
water main or sewer. 

SECTION P-305.0 EXCLUSION OF MATERIALS DETRIMENTAL 
TO THE SEWER SYSTEM 

P-305.1 Detrimental or dangerous materials: Ashes, cinders 
or rags; flammable, poisonous or explosive liquids or gases; oil, 
grease or any other insoluble material which is capable of 
obstructing, damaging or overloading the building drainage or 
sewer system, or which is capable of interfering with the normal 
operation of the sewage treatment processes, shall not be 
deposited, by any means, into such systems. 

P-305.2 Industrial wastes: Waste products from manufacturing 
or industrial operations shall not be introduced into the public 
sewer until it has been determined by the code official or other 
authority having jurisdiction that the introduction thereof will 
not damage the public sewer system or interfere with the 
functioning of the sewage treatment plant. 

SECTION P-306.0 PIPING MEASUREMENTS 

P-306.1 General: Except where otherwise specified in this code, 
all measurements shall be made to the centerlines of pipes. 

P-306.2 Pipe and tube sizes: Unless otherwise specified, the 
pipe and tube sizes specified in this code are expressed in 
nominal or standard sizes as designated in the referenced 
material standards. 



13 



THE BOCA NATIONAL PLUMBING CODE/1993 



SECTION P-307.0 WASHROOM AND TOILET ROOM REQUIREMENTS 

P-307.1 Light and ventilation: Washrooms and toilet rooms 
shall be illuminated in accordance with the building code listed 
in Chapter .19, and shall be ventilated in accordance with the 
mechanical code listed in Chapter 19. 

P-307.2 Location of fixtures and piping: Piping, fixtures or 
equipment shall not be located in such a manner as to interfere 
with the normal operation of windows, doors or other means of 

egress openings. 

P-307.3 Toilet rooms: Interior finish surfaces of toilet rooms 
shall comply with the building code listed in Chapter 19. 

P-307.4 Water closet compartment: Each water closet utilized 
by the public or employees shall occupy a separate compartment 
with a door and walls or partitions between fixtures to assure 

privacy. 

Exception: Water closet compartments shall not be required 
in a single-occupant toilet room with a lockable door. 

SECTION P-308.0 STRAINS AND STRESSES EN PIPE 

P-308.1 General: Piping in a plumbing system shall be installed 
so as to prevent strains and stresses which exceed the structural 
strength of the pipe. Where necessary, provisions shall be made 
to protect piping from damage resulting from expansion, con- 
traction and structural settlement. 

P-308.2 Underground piping: Piping installed in underground 
plumbing systems shall be protected from structural damage by 
an approved method of installation which accounts for the con- 
ditions of the installation and application and the type of piping 

material. 

SECTION P-309.0 PROTECTION OF PIPES 

P-309.1 Breakage: Pipes passing under or through walls shall 
be protected from breakage. Any plumbing pipe passing under a 
footing or through a foundation wall shall be provided with a 
relieving arch or sleeve two pipe sizes greater than the pipe 
passing through the wall. 

P- 309.2 Protection against physical damage: In concealed 
locations, where piping, other than cast-iron or galvanized steel, 
is installed through holes or notches in studs, joists, rafters or 
similar members less than 1 Va inches (32 mm) from the nearest 
edge of the member, the pipe shall be protected by shield plates. 
Protective shield plates shall be a minimum of l/i6-inch-thick (2 
mm) steel, shall cover the area of the pipe where the member is 
notched or bored and shall extend a minimum of 2 inches (51 
mm) above sole plates and below top plates. 

P-309.3 Corrosion: Pipe subject to corrosion by passing through 
or under corrosive fill including, but not limited to, cinders, 
concrete or other corrosive material, shall be protected against 
external corrosion by a protective coating, wrapping or other 
means that will resist such corrosion. 

P-309.4 Freezing: Water service piping shall be installed below 
recorded frost penetration but not less than [NUMBER] feet [NUM- 
BER] inches below grade. In climates with freezing temperatures, 
plumbing piping in exterior building walls or areas subjected to 



freezing temperatures shall be protected against freezing by 
insulation or heat or both. 

P-309.5 Sewer depth: Building sewers that connect to private 
sewage disposal systems shall be a minimum of [number] 
inches below finished grade at the point of septic tank connec- 
tion. Building sewers shall be a minimum of [NUMBER] inches 
below grade. 

P-309.6 Trenching and bedding: Where trenches are excavated 
to grade such that the bottom of the trench forms the bed for the 
pipe, solid and continuous loadbearing support shall be provided 
between joints, and bell holes shall be provided at points where 
the pipe is joined. Such pipe shall not be supported on blocks to 
grade. 

P-309.6.1 Backfill: Where trenches are excavated below 
grade such that the bottom of the trench does not form the bed 
for the pipe, the trench shall be backfilled to grade with sand 
or fine gravel placed in layers of 6 inches ( 1 52 mm) maximum 
depth and such backfill shall be compacted after each place- 
ment. 

P-309.6.2 Rock removal: Where rock is encountered in 
trenching, the rock shall be removed to a minimum of 3 inches 
(76 mm) below the grade line of the trench, and the trench 
shall be backfilled to grade with sand tamped in place so as 
to provide uniform loadbearing support for the pipe between 
joints. The pipe shall not rest on rock at any point including 
the joints. 

P-309.6.3 Soft loadbearing material: If soft materials of 
poor loadbearing qualities are found at the bottom of the 
trench, stabilization shall be achieved by overexcavating a 
minimum of two pipe diameters and backfilling to grade with 
fine gravel, crushed stone or a concrete foundation. The 
concrete foundation shall be bedded with sand tamped in 
place so as to provide uniform loadbearing support for the 
pipe between joints. 

P-309.7 Flood hazard: All piping systems and equipment lo- 
cated in a flood-hazard zone (A Zone) or a high-hazard zone (V 
Zone) shall be capable of resisting hydrostatic and hydrodynamic 
loads and stresses, including the effects of buoyancy, during the 
occurrence of flooding to the base flood elevation. 

P-309.8 Tunneling: The pipe shall be protected from damage 
during tunneling installation and from uneven loading. Where 
earth tunnels are utilized, supporting structures shall be provided 
to prevent future settling or caving. 

P-309.9 Backfilling: Loose earth, free from rocks, broken con- 
crete, frozen chunks and other rubble, shall be placed in the 
trench in 6-inch (152 mm) layers and tamped in place. The 
backfill under and beside the pipe shall be compacted for pipe 
support. Backfill shall be brought up evenly on both sides of the 
pipe so that the pipe remains aligned. 

SECTION P-310.0 SLEEVES 

P-310.1 Exterior walls: In exterior walls, the annular space 
between sleeves and pipes shall be filled with an approved 
caulking material. 



14 



GENERAL REGULATIONS 



SECTION P-311.0 RATPROOFING 

P-311.1 Strainer plates: All strainer plates on drain inlets shall 
be designed and installed so that all openings are not greater than 
!/2 inch (13 mm) in least dimension. 

P-311.2 Meter boxes: Meter boxes shall be constructed in such 
a manner that rats are prevented from entering a structure by way 
of the water service pipes connecting the meter box and the 
structure. 

P-311.3 Openings for water service pipes: In or on structures 
where openings have been made in walls, floors or ceilings for 
the passage of pipes, such openings shall be closed and protected 
by the installation of approved metal collars that are securely 
fastened to the adjoining structure. 

SECTION P-31 2.0 TOILET FACILITIES FOR WORKERS 

P-312.1 General: Toilet facilities shall be provided for construc- 
tion workers and such facilities shall be maintained in a sanitary 
condition. Construction worker toilet facilities of the nonsewer 
type shall conform to ANSI Z4.3 listed in Chapter 19. 

SECTION P-313.0 ELEVATOR SHAFTS AND EQUIPMENT ROOSVIS 

P-313.1 General: Plumbing systems shall not be located in an 
elevator shaft or in an elevator equipment room. 

Exception: Floor drains, sumps and sump pumps shall be 
permitted at the base of the shaft. 



15 



CHAPTER 4 



MATERIALS 



SECTION P-401.0 GENERAL 

P-401.1 General: This chapter shall govern the quality of all 
materials, fixtures and equipment utilized in the alteration, repair 
or installation of plumbing systems. 

SECTBON P-402.0 IDENTIFICATION AND LABELING OF MATERIALS 

P-402.1 Identification: The manufacturer's mark or name and 
the quality of the product or identification shall be cast, em- 
bossed, stamped or indelibly marked on each length of pipe and 
each pipe fitting, trap, fixture, material and device utilized in a 
plumbing system in accordance with the applicable approved 
standard. 

P-402.2 Plastic pipe, fittings and components: All plastic pipe, 
fittings and components shall bear the label of an approved 
agency as conforming to NSF 14 listed in Chapter 19. 

P-402.3 Labeling: Materials and piping required to be labeled 
shall be labeled in accordance with the procedures set forth in 
Sections P-402.3. 1 through P-402.3.2.3. 

P-402.3. 1 Testing: An approved agency shall test a repre- 
sentative sample of the material or piping being labeled to the 
relevant standard or standards. The approved agency shall 
maintain a record of all of the tests performed. The record 
shall provide sufficient detail to verify compliance with the 
test standard. 

P-402.3.2 Inspection and identification: The approved 
agency shall periodically perform an inspection, which shall 
be in-plant if necessary, of the material or piping that is to be 
labeled. The inspection shall verify that the labeled material 
or piping is representative of the material or piping tested. 

P-402.3.2.1 Independent: The agency to be approved 
shall be objective and competent. The agency shall also 
disclose all possible conflicts of interest so that objectivity 
can be confirmed. 

P-402.3.2.2 Equipment: An approved agency shall have 
adequate equipment to perform all required tests. The 
equipment shall be periodically calibrated 



P-402.3.2.3 Personnel: An approved agency shall employ 
experienced personnel educated in conducting, supervis- 
ing and evaluating tests. 

SECTION P-403.0 WATER SUPPLY PIPING SYSTEM MATERIALS 

P- 403.1 Water quality: Water service pipe and water distribu- 
tion pipe shall be resistant to corrosive action and degrading 
action from the potable water supplied by the water purveyor or 
individual water supply system. 

P-403.2 Soil and ground water: The installation of a water 
service pipe shall be prohibited in soil and ground water which 
are contaminated with solvents, fuels, organic compounds or 
other detrimental materials causing permeation, corrosion, 
degradation or structural failure of the piping material. Where 
detrimental conditions are suspected, a chemical analysis of the 
soil and ground water conditions shall be required to ascertain 
the acceptability of the water service material for the specific 
installation. Where detrimental conditions exist, approved alter- 
native materials or routing shall be required. 

P-403.3 Lead-free water supply pipe and fittings: Pipe and 
pipe fittings, including valves and faucets, utilized in the water 
supply system shall have a maximum of 8-percent lead. 

P-403.4 Water service pipe: Water service pipe shall conform 
to NSF 6 1 listed in Chapter 1 9 and shall conform to one of the 
standards listed in Table P-403.4. All water service pipe or 
tubing, installed underground and outside of the structure, shall 
have a minimum working pressure of 1 60 pounds per square inch 
(psi) (1100 kPa) at 73.4 degrees F. (23 degrees CO- Where the 
water pressure exceeds 160 psi (1 100 kPa), piping material shall 
have a minimum rated working pressure equal to the highest 
available pressure. Plastic water service piping shall terminate 
within 5 feet (1524 mm) inside the point of entry into a building. 

P-403.5 Water distribution pipe: Water distribution pipe shall 
conform to NSF 61 listed in Chapter 19 and shall conform to one 
of the standards listed in Table P-403.5. All hot water distribution 
pipe and tubing shall have a minimum pressure rating of 80 psi 
(550 kPa) at 180 degrees F. (82 degrees C). 



17 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table P-403.4 


WATER SERVICE PIPE 


Material 


Standard (see Chapter 19) 


Acrylonitrile butadiene styrene 


ASTM D1 527; ASTM D2282 


(ABS) plastic pipe 




Asbestos-cement pipe 


ASTM C296 


Brass pipe 


ASTM B43 


Copper or copper-alloy pipe 


ASTM B42; ASTM B302 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(TypeK.WK, L, WL, MorWM) 


ASTM B251; ASTM B447 


Chlorinated polyvinyl chloride 


ASTM D2846; ASTM F441 ; 


(CPVC) plastic pipe 


ASTM F442;CSAB1 37.6 


Ductile iron water pipe 


AWWAC151 


Galvanized steel pipe 


ASTM A53 


Polybutylene (PB) plastic pipe 


ASTM D2662; ASTM D2666; 


and tubing 


ASTM D3309; 




CSACAN3-B137.8 


Polyethylene (PE) 


ASTM D2239; 


plastic pipe 


CSACAN/CSA-B137.1 


Polyethylene (PE) plastic tubing 


ASTMD2737; 




CSACAN/CSA-B137.1 


Polyvinyl chloride (PVC) plastic 


ASTM D1 785; ASTM D2241; 


pipe 


ASTM D2672; 




CSACAN/CSA-B137.3 



Table P-403.5 


WATER DISTRIBUTION PIPE 


Material 


Standard (see Chapter 19) 


Brass pipe 


ASTM B43 


Chlorinated polyvinyl chloride 


ASTM D2846; ASTM F441 ; 


(CPVC) plastic pipe and tubing 


ASTM F442; CSA B1 37.6 


Copper or copper-alloy pipe 


ASTM B42; ASTM B302 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(TypeK.WK. L, WL, M or WM) 


ASTM B251; ASTM B447 


Cross-linked polyethylene (PEX) 


ASTMF877; 


plastic tubing 


CSACAN/CSA-B137.5 


Cross-linked polyethylene/ 


CSA CAN/CSA-B1 37.10 


aluminum/cross-linked 




polyethylene (PEX-AL-PEX) pipe 




Galvanized steel pipe 


ASTM A53 


Polybutylene (PB) plastic pipe 

and tubing 
Polyethylene/aluminum/ 


ASTM D3309; CSA CAN3-B1 37.8 


CSA CAN/CSA-B1 37.9 


polyethylene (PE-AL-PE) pipe 





SECTION P-404.0 SANITARY DRAINAGE AND 
VENT PIPING SYSTEM MATERIALS 

P-404.1 Above-ground sanitary drainage and vent pipe: 

Above-ground soil, waste and vent pipe shall conform to one of 
the standards listed in Table P-404.1. 



Table P-404.1 


ABOVE-GROUND DRAINAGE AND VENT PIPE 


Material 


Standard (see Chapter 19) 


Acrylonitrile butadiene styrene 


ASTM D2661; ASTM F628; 


(ABS) plastic pipe 


CSA CAN/CSA-B1 81.1 


Brass pipe 


ASTM B43 


Cast-iron pipe 


ASTM A74; CISPI 301 


Copper or copper-alloy pipe 


ASTM B42; ASTM B302 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(Type K, L, M or DWV) 


ASTM B251; ASTM B306 


Galvanized steel pipe 


ASTM A53 


Lead pipe 


FSWW-P-325B 


Polyolefin pipe 


CSA CAN/CSA-B1 81.3" ■■ 


Polyvinyl chloride (PVC) plastic 


ASTM D2665; ASTM D2949; 


pipe (Type DWV) 


ASTMF891; 




CSA CAN/CSA-B1 81.2 



P-404.2 Underground building sanitary drainage and vent 
pipe: Underground building sanitary drainage and vent pipe 
shall conform to one of the standards listed in Table P-404.2. 

Table P-404.2 
UNDERGROUND BUILDING DRAINAGE AND VENT PIPE 



Material 


Standard (see Chapter 19) 


Acrylonitrile butadiene styrene 


ASTM D2661; ASTM F628 


(ABS) plastic pipe 
Asbestos-cement pipe 




ASTM C428 


Cast-iron pipe 


ASTM A74; CISPI 301 


Concrete pipe 


ASTMC14;ASTMC76 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(Type K or L) 


ASTM B251 


Polyolefin pipe 


CSACAN/CSA-B181.3 


Polyvinyl chloride (PVC) plastic 


ASTM D2665; ASTM D2949; 


pipe (Type DWV) 


ASTMF891; 




CSA CAN/CSA-B1 81.2 



P-404.3 Building sewer pipe: Building sewer pipe shall con- 
form to one of the standards listed in Table P-404.3. 

Table P-404.3 
BUILDING SEWER PIPE 



Material 


Standard (see Chapter 19) 


Acrylonitrile butadiene styrene 


ASTM D2661; ASTM D2751; 


(ABS) plastic pipe 


ASTM F628 


Asbestos-cement pipe 


ASTM C428 


Bituminized fiber pipe 


ASTM D1 861; ASTM D1 862 


Cast-iron pipe 


ASTM A74; CISPI 301 


Concrete pipe 


ASTMC14;ASTMC76; 




CSAA257.1;CSAA257.2 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(Type K-orL) 


ASTMB251 


Polyvinyl chloride (PVC) plastic 


ASTM D2665; ASTM D2949 


pipe (Type DWV, SDR26, 


ASTM D3034; ASTM F891; 


SDR35,SDR41,PS50or 


CSA CAN/CSA-B1 82.2; 


PS100) 


CSA CAN/CSA-B1 82.4 


Vitrified clay pipe 


ASTM C4; ASTM C700 



P-404.3.1 Building sewer pipe in trench with water serv- 
ice: Where the building sewer is installed in the same trench 
as the water service, as provided for in Section P-] 504.2, the 
building sewer pipe shall conform to one of the standards for 
ABS plastic pipe, cast-iron pipe, copper or copper- alloy 
tubing, or PVC plastic pipe listed in Table P-404.3. 

P-404.3.2 Drainage pipe in filled ground: Where a building 
sewer or building drain is installed on filled or unstable 
ground, the drainage pipe shall conform to one of the stand- 
ards for ABS plastic pipe, cast-iron pipe, copper or copper- 
alloy tubing, or PVC plastic pipe listed in Table P-404.3. 

P-404.4 Existing building sewers and drains: Existing build- 
ing sewers and drains shall connect with new building sewer and 
drainage systems only where found by examination and test to 
conform to the new system in quality of material. 

P-404.5 Chemical waste and vent pipe: Separate drainage 
systems for chemical wastes and vent pipes shall be of an 
approved material that is resistant to corrosion and degradation 
for the concentrations of chemicals involved. Polyolefin 
drainage pipe installed in chemical waste or vent piping systems 
shall conform to CSA CAN/CSA-B181 .3 listed in Chapter 19. 



18 



MATERIALS 



SECTION P-405.0 STORM DRAINAGE PIPING SYSTEM MATERIAL 

P-405 J. Inside storm drainage conductors: Inside storm drain- 
age conductors installed above ground shall conform to one of 
the standards listed in Table P-404.1. 

P-405.2 Underground building storm drain pipe: Under- 
ground building storm drain pipe shall conform to one of the 
standards listed in Table P-404.2. 

P-405.3 Building storm sewer pipe: Building storm sewer pipe 
shall conform to one of the standards listed in Table P-405.3. 

Table P-405.3 
BUILDING STORfVS SEWER PIPE 



Table P-406.1 
PIPE FITTINGS 



Material 


Standard (see Chapter 19) 


Acryionitrile butadiene styrene 


ASTMD2661;ASTMD2751; 


(ABS) plastic pipe 


ASTM F628 


Asbestos-cement pipe 


ASTMC428 


Bituminized fiber pipe 


ASTM D1 861; ASTM D1 862 


Cast-iron pipe 


ASTM A74;CISPI 301 


Concrete pipe 


ASTMC14;ASTMC76; 




CSAA257.1;CSAA257.2 


Copper or copper-alloy tubing 


ASTM B75; ASTM B88; 


(Type K, L, M or DWV) 


ASTM B251; ASTM B306 


Polyvinyl chloride (PVC) plastic 


ASTM D2665; ASTM D3034; 


pipe (Type DWV, SDR26, 


ASTMF891; 


SDR35,SDR41,PS50or 


CSACAN/CSA-B182.2; 


PS100) 


CSACAN/CSA-B182.4 


Vitrified clay pipe 


ASTM C4; ASTM C700 



P-405.4 Subsoil drain pipe: Subsoil drains shall be open- 
jointed, horizontally split or perforated pipe conforming to one 
of the standards listed in Table P-405.4. 

Table P-405.4 
SUBSOIL DRAIN PIPE 



Material 


Standard (see Chapter 19) 


Asbestos-cement pipe 


ASTM C508 


Bituminized fiber pipe 


ASTMD2311 


Cast-iron pipe 


ASTM A74; CISPI 301 


Polyethylene (PE) plastic pipe 


ASTM F405 


Polyvinyl chloride (PVC) plastic 


ASTM D2729; ASTM F891; 


pipe (Type Sewer Pipe, PS25, 


CSACAN/CSA-B182.2; 


PS50orPS100) 


CSACAN/CSA-B182.4 


Vitrified clay pipe 


ASTM C4; ASTM C700 



P-405.5 Roof drains: Roof drains shall conform to ASME 
Al 12.21.2 listed in Chapter 19. 

SECTION P-406.0 PIPE FITTINGS, VALVES AND NIPPLES 

P-406.1 Fittings: Pipe fittings shall be approved for installation 
with the piping material installed, and shall conform to the 
respective pipe standards or one of the standards listed in Table 
P-406.1. The fittings shall not have ledges, shoulders or reduc- 
tions which are capable of retarding or obstructing flow in the 
piping. Threaded drainage pipe fittings shall be of the recessed 
drainage type. 

P-406.1.1 Water supply system pipe fittings: All pipe fit- 
tings utilized in water supply systems shall conform to NSF 
61 listed in Chapter 19. 

P-406.2 Valves: All valves shall be of the approved type, and 
compatible with the type of piping material installed in the 
system. 



Material 


Standard (see Chapter 19) 


Cast iron 


ASME B1 6.4; ASME B1 6.1 2 


Copper or copper alloy 


ASME B16.15; ASME B16.18; 




ASME B1 6.22; ASME B1 6.23; 




ASME B1 6.26; ASME B1 6.29; 




ASME B1 6.32 


Gray iron and ductile iron 


AWWAC110 


Malleable iron 


ASME B1 6.3 


Plastic 


ASTM D2464; ASTM D2466; 




ASTM D2467; ASTM D2468; 




ASTM D2609; ASTM F409; 




ASTM F437; ASTM F438; 




ASTMF439; 




CSACAN/CSA-B137.2 


Steel 


ASME B1 6.9; ASME B1 6.11; 




ASME B1 6.28 



P-406.3 Manufactured pipe nippies: Manufactured pipe nip- 
ples shall conform to one of the standards listed in Table P-406.3. 

Table P-406.3 
MANUFACTURED PIPE NIPPLES 



Material 



Steel 

Brass-, copper-, chromium-plated 



Standard (see Chapter 19) 



ASTM A733 
ASTM B687 



SECTION P-407.0 SPECIAL MATERIALS 

P-407.1 Sheet lead: Sheet lead for the applications shall conform 
to FS QQ-L-201f-2 listed in Chapter 19, and shall weigh not less 
than indicated in the following: 

1. General application, 4 pounds per square foot (20 kg/m ). 

2. Flashings for vent pipes, 3 pounds per square foot (1.5 
kg/m ). 

3. Prefabricated flashings for vent pipes, 2 ] /z pounds per 
square foot (12 kg/m ). 

P-407.2 Lead bends and traps: The walls of lead bends and 
traps shall be at least V% inch (3 mm) thick, and shall conform to 
FS WW-P-325B listed in Chapter 19. 

P-407.3 Copper or tubular brass traps and tailpiece fittings: 

All copper or tubular brass traps and tailpiece fittings shall be 
not less than 0.054 inch (No. 17 gage) in material thickness, and 
shall conform to the requirements of ASME A 1 1 2. 1 8. 1 listed in 
Chapter 19. 

P-407.4 Sheet copper: Sheet copper for the following applica- 
tions shall conform to ASTM B 1 52 listed in Chapter 1.9, and shall 
weigh not less than the following: 

1. General application, 12 ounces per square foot (3.7 kg/m ). 

2. Flashing for vent pipes, 8 ounces per square foot (2.5 
kg/m 2 ). 

3. Flush tank linings, 10 ounces per square foot (3 kg/m ). 

P-407.5 Caulking ferrules: Ferrules shall be of red brass and 
shall be in accordance with Table P-407.5. 

P-407.6 Soldering bushings: Soldering bushings shall be of red 
brass and shall be in accordance with Table P-407.6. 



19 



THE BOCA NATIONAL PLUMBING CODE/1993 



P- 506.2 Brazed joints: All joint surfaces shall be cleaned. An 
approved flux shall be applied where required. The joint shall be 
brazed with a filler metal conforming to AWS A5.8 listed in 
Chapter .19. 

P-506.3 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

P- 506.4 Threaded joints: Threads shall conform to AS ME 
B 1.20.1. listed in Chapter 1.9. Pipe-joint compound or tape shall 
be applied on the male threads only. 

P-506.5 Welded joints: All joint surfaces shall be cleaned. The 
joint shall be welded with an approved filler metal 

SECTION P-507.0 CAST-IRON PIPE AND FITTINGS 

P-507.1 General: Joints between cast-iron pipe or fittings shall 
comply with Sections P-507.2 through P-507.5. 

P-507.2 Caulked joints (drain): Joints for hub and spigot pipe 
shall be firmly packed with oakum or hemp. Molten lead shall 
be poured in one operation to a depth of not less than 1 inch (25 
mm). The lead shall not recede more than V& inch (3 mm) below 
the rim of the hub and shall be caulked tight. Paint, varnish or 
other coatings shall not be permitted on the joining material until 
after the joint has been tested and approved. 

P-507.3 Caulked joints (water): Joints for bell and spigot pipe 
shall be firmly packed with clean, sound asbestos rope or treated 
paper rope. Molten lead shall be poured in one operation to a 
depth indicated in Table P-507.3. The lead shall be caulked tight. 

Table P-507.3 
LEAD DEPTH FOR CAULKED CAST-IRON PIPE 



Pipe size (inches) 


Depth of lead (inches) 3 


Up to 20 

24, 30, 36 

Larger than 36 


2V4 

2V2 

3 



Note a. 1 inch = 25.4 mm. 

P-507.4 Mechanical compression joints: Compression gaskets 
shall conform to ASTM C564 listed in Chapter 19. Gaskets shall 
be compressed when the pipe is fully inserted. 

P-507.5 Mechanical joint coupling: Mechanical joint cou- 
plings shall have an elastomeric sealing sleeve that conforms to 
ASTM C564 or CSA CAN/CSA-B602 listed in Chapter 19 and 
is provided with a center stop. Mechanical joint couplings shall 
be installed in accordance with the manufacturer's installation 
instructions. 

SECTION P-508.0 CONCRETE PIPE AND FITTINGS 

P-508.1 Mechanical joints: Joints between concrete pipe or 
fittings shall be made with an elastomeric seal conforming to 
ASTM C443 or CSA A257.3 listed in Chapter 19. 

SECTION P-509.0 COPPER OR COPPER-ALLOY PIPE AND FITTINGS 

P-509.1 General: Joints between copper or copper-alloy pipe or 
fittings shall comply with Sections P-509.2 through P-509.6. 

P-509.2 Brazed joints: All joint surfaces shall be cleaned. An 
approved flux shall be applied where required. The joint shall be 
brazed with a filler metal conforming to AWS A5.8 listed in 
Chapter 19. 



P-509.3 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

P-509.4 Soldered joints: All joint surfaces shall be cleaned. A 
flux conforming to ASTM B813 listed in Chapter 19 shall be 
applied. The joint shall be soldered with a solder conforming to 
ASTM B32 listed in Chapter 19. The joining of water supply 
piping shall be made with lead-free solder and fluxes. "Lead 
free" shall mean a chemical composition equal to or less than 
0.2-percent lead. 

P-509.5 Threaded joints: Threads shall conform to ASME 
B 1.20.1 listed in Chapter 19. Pipe-joint compound or tape shall 
be applied on the male threads only. 

P-509.6 Welded joints: All joint surfaces shall be cleaned. The 
joint shall be welded with an approved filler metal. 

SECTION P-510.0 COPPER OR COPPER-ALLOY 
TUBING AND FITTINGS 

P-510.1 General: Joints between copper or copper-alloy tubing 
or fittings shall comply with Sections P-510.2 through P-510.5. 

P-510.2 Brazed joints: All joint surfaces shall be cleaned. An 
approved flux shall be applied where required. The joint shall be 
brazed with a filler metal conforming to AWS A5.8 listed in 
Chapter 19. 

P-510.3 Flared joints: Flared joints for water pipe shall be made 
by a tool designed for that operation. 

P-510.4 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

P-510.5 Soldered joints: All joint surfaces shall be cleaned. A 
flux conforming to ASTM B813 listed in Chapter 19 shall be 
applied. The joint shall be soldered with a solder conforming to 
ASTM B32 listed in Chapter 19. The joining of water supply 
piping shall be made with lead-free solders and fluxes. "Lead 
free" shall mean a chemical composition equal to or less than 
0.2-percent lead. 

SECTION P-511.0 CPVC PLASTIC PIPE AND FITTINGS 

P-511.1 General: Joints between CPVC plastic pipe or fittings 
shall comply with Sections P-5 1 1 .2 through P-5 1 1 .4. 

P-511.2 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

P-511.3 Solvent cementing: Joint surfaces shall be clean and 
free from moisture, and an approved primer shall be applied. 
Solvent cement, orange in color and conforming to ASTM F493 
listed in Chapter 19, shall be applied to all joint surfaces. The 
joint shall be made while the cement is wet, and in accordance 
with ASTM D2846 or F493 listed in Chapter 19. Solvent-cement 
joints shall be permitted above or below ground. 

P-511.4 Threaded joints: Threads shall conform to ASME 
B 1.20.1 listed in Chapter 19. Schedule 80 or heavier pipe shall 
be permitted to be threaded with dies specifically designed for 
plastic pipe. Approved thread lubricant or tape shall be applied 
on the male threads only. 



22 



JOINTS AND CONNECTIONS 



SECTION P-512.0 GALVANIZED STEEL PIPE AND FITTINGS 

P-512.1 General: Joints between galvanized steel pipe or fit- 
tings shall comply with Sections P-512.2 and P-512.3. 

P-512.2 Threaded joints: Threads shall conform to ASME 
B 1.20.1 listed in Chapter 19. Pipe-joint compound or tape shall 
be applied on the male threads only. 

P-512.3 Mechanical joints: Joints shall be made with an ap- 
proved elastomeric seal. Mechanical joints shall be installed in 
accordance with the manufacturer's instructions. 

SECTION P-513.0 LEAD PIPE AND FITTINGS 

P-513.1 General: Joints between lead pipe or fittings shall 
comply with Sections P-513.2 and P-513.3. 

P-513.2 Burned: Burned joints shall be uniformly fused 
together into one continuous piece. The thickness of the joint 
shall be at least as thick as the lead being joined. The filler metal 
shall be of the same material as the pipe. 

P-513.3 Wiped: Joints shall be fully wiped, with an exposed 
surface on each side of the joint not less than 3/4 inches (1 9 mm). 
The joint shall be at least V% inch (10 mm) thick at the thickest 
point. 

SECTION P-514.0 POLYBUTYLENE PLASTIC PIPE, 
TUBING AND FITTINGS 

P-514.1 General: Joints between polybutylene plastic pipe and 
tubing or fittings shall comply with Sections P-514.2 through 
P-514.4. 

P-514.2 Flared joints: Flared pipe ends shall be made by a tool 
designed for that operation. 

P-514.3 Heat-fusion joints: Joints shall be of the socket-fusion 
or butt-fusion type. Joint surfaces shall be clean and free from 
moisture. All joint surfaces shall be heated to melt temperature 
and joined. The joint shall be undisturbed until cool. Joints shall 
be made in accordance with ASTM D2657, ASTM D3309 or 
CSACAN3-B 137.8 listed in Chapter 19. 

P-514.4 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. Metallic 
lock rings employed with insert fittings as described in ASTM 
D3309 or CSA CAN3-B 137.8 listed in Chapter 19 shall be 
installed in accordance with the manufacturer's instructions. 

SECTION P-515.0 POLYETHYLENE PLASTIC PIPE, 
TUBING ANO FITTINGS 

P-515.1 General: Joints between polyethylene plastic pipe and 
tubing or fittings shall comply with Sections P-515.2 through 
P-515.5. 

P-515.2 Flared joints: Flared joints shall be permitted where so 
indicated by the pipe manufacturer. Flared joints shall be made 
by a tool designed for that operation. 

P-515.3 Heat-fusion joints: Joint surfaces shall be clean and 
free from moisture. All joint surfaces shall be heated to melt 
temperature and joined. The joint shall be undisturbed until cool. 
Joints shall be made in accordance with ASTM D2657 listed in 
Chapter 19. 



P-515.4 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

P-515.5 Installation: Polyethylene pipe shall be cut square, with 
a cutter designed for plastic pipe. Except where joined by heat 
fusion, pipe ends shall be chamfered to remove sharp edges. 
Kinked pipe shall not be installed. The minimum pipe bending 
radius shall not be less than 30 pipe diameters, or the minimum 
coil radius, whichever is greater. Piping shall not be bent beyond 
straightening of the curvature of the coil. Bends shall not be 
permitted within ten pipe diameters of any fitting or valve. 
Stiffener inserts installed with compression-type couplings and 
fittings shall not extend beyond the clamp or nut of the coupling 
or fitting. 

SECTION P-516.0 PVC PLASTIC PIPE AND FITTINGS 

P-516.1 General: Joints between PVC plastic pipe or fittings 
shall comply with Sections P-5 16.2 through P-5 16.4. 

P-516.2 Mechanical joints: Mechanical joints on water pipe 
shall be made with an elastomeric seal conforming to ASTM 
D3139 listed in Chapter 19. Mechanical joints on drainage pipe 
shall be made with an elastomeric seal conforming to ASTM 
D3212 listed in Chapter 19. Mechanical joints shall not be 
installed in above-ground systems, unless otherwise approved. 
Joints shall be installed in accordance with the manufacturer's 
instructions. 

P-516.3 Solvent cementing: Joint surfaces shall be clean and free 
from moisture. A purple primer that conforms to ASTM F656 
listed in Chapter 19 shall be applied. Solvent cement not purple 
in color and conforming to ASTM D2564, CSA CAN/CSA- 
B 137.3, CSA CAN/CSA-B181.2 or CSA CAN/CSA-BI82.1 
listed in Chapter 1 9 shall be applied to all joint surfaces. The joint 
shall be made while the cement is wet, and shall be in accordance 
with ASTM D2855 listed in Chapter 19. Solvent-cement joints 
shall be permitted above or below ground. 

P-516.4 Threaded joints: Threads shall conform to ASME 
Bl.20.1 listed in Chapter 19. Schedule 80 or heavier pipe shall 
be permitted to be threaded with dies specifically designed for 
plastic pipe. Approved thread lubricant or tape shall be applied 
on the male threads only. 

SECTION P-517.0 VITRIFIED CLAY PIPE AND FITTINGS 

P-517.1 Mechanical joint: Joints between vitrified clay pipe or 
fittings shall be made with an elastomeric seal conforming to 
ASTM C425 listed in Chapter 19. 

SECTION P-518.0 JOINTS BETWEEN PIPE AND FITTINGS 
OF DIFFERENT MATERIAL 

P-518.1 General: Joints between different piping materials shall 
be made with a mechanical joint of the compression or mechani- 
cal-sealing type, or as permitted in Sections P-5 1 8.2 through 
P-5 18.6. Connectors or adapters shall have an elastomeric seal 
conforming to ASTM C425, ASTM C443, ASTM C564, ASTM 
D1869, ASTM F477 or CSA A257.3 listed in Chapter 19. Joints 
shall be installed in accordance with the manufacturer's instruc- 
tions. 

P-518.2 Copper or copper-alfioy tubing to cast-iron hub pipe: 

Joints between copper or copper-alloy tubing and cast-iron hub 



23 



THE BOCA NATIONAL PLUMBING CODE/1993 



pipe shall be made with a brass ferrule or compression joint. The 
copper or copper-alloy tubing shall be soldered to the ferrule in 
an approved manner, and the ferrule shall be joined to the 
cast-iron hub by a caulked joint or a mechanical compression 
joint. 

P-518.3 Copper or copper-alloy tubing to galvanized steel 
pipe: Joints between copper or copper-alloy tubing and gal- 
vanized steel pipe shall be made with a brass converter fitting or 
dielectric fitting. The copper tubing shall be soldered to the 
fitting in an approved manner, and the fitting shall be screwed to 
the threaded pipe. 

P-518.4 Cast-iron pipe to galvanized steel or brass pipe: 

Joints between cast-iron and galvanized steel or brass pipe shall 
be made by either caulked or threaded joints or with an approved 
adapter fitting. 

P-518.5 Plastic pipe or tubing to other piping material: Joints 
between different grades of plastic pipe or between plastic pipe 
and other piping material shall be made with an approved adapter 
fitting, Joints between plastic pipe and cast-iron hub pipe shall 
be made by a caulked joint or a mechanical compression joint. 

P-518.6 Lead pipe to other piping material: Joints between 
lead pipe and other piping material shall be made by a wiped 
joint to a caulking ferrule, soldering nipple, bushing or shall be 
made with an approved adapter fitting. 

SECTION P-519.0 PROHIBITED JOINTS AND CONNECTIONS 

P-519.1 General: The following types of joints and connections 
shall be prohibited: 

1 . Cement or concrete joints. 

2. Mastic or hot-pour bituminous joints. 

3. Joints made with fittings not approved for the specific 
installation. 

4. Joints between different diameter pipes made with elasto- 
meric rolling O-rings. 

5. Solvent-cement joints between different types of plastic 
pipe. 

SECTION P-520.0 CONNECTIONS BETWEEN FIXTURES 

P-520.1 Floor and wall drainage connections: Connections 
between the drain and floor outlet plumbing fixtures shall be 
made with a floor flange. The flange shall be attached to the drain 
and anchored to the structure. Connections between the drain and 
wall-hung water closets shall be made with an approved exten- 
sion nipple or horn adapter. The water closet shall be bolted to 
the hanger with corrosion -resistant bolts or screws. Joints shall 
be sealed with an approved elastomeric gasket or setting com- 
pound conforming to FS TT-P- 1536a listed in Chapter 19. 

P-520.2 Drainage slip joints: Slip joints shall be made with an 
approved elastomeric gasket and shall only be installed on the 
trap outlet, trap inlet or within the trap seal 

SECTION P-521.0 EXPANSION JOINTS 

P-521.1 General: Expansion joint fittings shall be of an ap- 
proved type for the piping material being joined. 



SECTION P-522.0 PENETRATIONS 

P-522.1 Penetrations of floor/ceiling assemblies and 
fireresistance rated assemblies: Penetrations of floor/ceiling 
assemblies and assemblies required to have a fireresistance 
rating shall be protected in accordance with the building code 
listed in Chapter 19. 

P- 522.2 Exterior openings: Openings through the roof shall be 
made water tight by an approved flashing. Openings through 
exterior walls shall be made water tight. 



24 



CHAPTER 6 



SANITARY DRAINAGE SYSTEMS 



SECTION P-601.0 GENERAL 

P-601.1 Scope: The provisions of this chapter shall set forth the 
requirements for the design and installation of sanitary drainage 
systems. 

P-601.2 Engineered systems: Engineered sanitary drainage 
systems shall conform to the provisions of Chapter 18. 

P-601.3 Chemical waste system: A chemical waste system shall 
be completely separated from the sanitary drainage system. The 
chemical waste shall be treated in accordance with Section 
P-704.0 before discharging to the sanitary drainage system. 

SECTION P-602.0 DEFINITIONS 

P-602.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Bathroom group: A water closet, bidet, lavatory and bathtub or 

shower located together on the same floor level. 

Branch: Any part of the piping system except a riser, main or 
stack. 

Branch interval: A distance along a soil or waste stack cor- 
responding in general to a story height, but not less than 8 feet 
(2438 mm), within which the horizontal branches from one 
floor or story of a structure are connected to the stack. 

Building drain: That part of the lowest piping of a drainage 
system which receives the discharge from soil, waste and 
other drainage pipes inside the walls of the building and 
conveys the drainage to the building sewer. 
Sanitary: A building drain that conveys sewage only. 

Building sewer: That part of the drainage system which extends 
from the end of the building drain and conveys the discharge 
to a public sewer, private sewer, individual sewage disposal 
system, or other point of disposal. 
Sanitary: A building sewer that conveys sewage only. 

Building subdrain: That portion of a drainage system which 
does not drain by gravity into the building sewer. 

Dead end: A branch leading from a soil, waste or vent pipe, a 
building drain, or a building sewer, and terminating at a 
developed length of 2 feet (610 mm) or more by means of a 
plug, cap or other closed fitting. 



Drain: Any pipe that carries waste water or water-borne wastes 
in a building drainage system,. 

Drainage fittings: A special type of fitting or fittings utilized in 
the drainage system. Drainage fittings are similar to cast-iron 
fittings, except that instead of having a bell and spigot, 
drainage fittings are recessed and tapped to eliminate ridges 
on the inside of the installed pipe. 

Drainage system: All of the piping within a public or private 
premises which conveys sewage, rainwater or other liquid 
wastes to a point of disposal. A drainage system does not 
include the mains of public sewer systems or a private or 
public sewage treatment or disposal plant. 
Building gravity: A drainage system that drains by gravity 
into the building sewer. 

Sanitary: A drainage system that carries sewage and ex- 
cludes storm, surface and ground water. 

Emergency floor drain: A floor drain that does not receive the 
discharge of any drain or indirect waste pipe. A floor drain 
that protects against damage from accidental spills, fixture 
overflows and leakage. 

Fixture unit 

Drainage (dfu): A measure of the probable discharge into the 
drainage system by various types of plumbing fixtures. 

Offset: A combination of approved bends which makes two 
changes in direction bringing one section of the pipe out of 
line but into a line parallel with the other section. 

Sewage ejectors: A device for lifting sewage by entraining the 
sewage in a high- velocity jet of steam, air or water. 

Sewer 

Building sewer: See "Building sewer" 

Public sewer: A common sewer directly controlled by public 

authority. 

Sump: A tank or pit which receives sewage or liquid waste and 
is located below the normal grade of the gravity system. The 
tank or pit is emptied by mechanical means. 

SECTION P-603.0 DRAINAGE SYSTEM SIZING 

P-603.1 Drainage load: The drainage fixture unit load shall be 
determined for each sanitary drainage pipe in accordance with 
Table P-603.1(l), Table P-603.1 (2) and Section P-603.U. Fix- 
tures not listed in Table P-603.1 (1) shall have a drainage fixture 



25 



THE BOCA NATIONAL PLUMBING CODE/1993 



unit load based on the outlet size of the fixture in accordance 
with Table P-603..l(2). The minimum trap size for unlisted 
fixtures shall be the size of the drainage outlet but not less than 

I Va inches. 

Table P-603.1(1) 

DRAINAGE FIXTURE UNIT VALUES FOR VARIOUS 

PLUMBING FIXTURES 



Type of fixture or group of fixtures 


Drainage 

fixture 

unit value 


Trap size 
(inches) 


Automatic clothes washer standpipe — 






commercial 


3 


2 


Automatic clothes washer standpipe — ■ 






domestic 


■2 


V/i 


Bathroom group 


6 


— 


Bathtub 


2 


1V<> 


Bidet 


1 


1V4 


Combination sink and tray 


2 


m 


Dental unit 


1 


11/4 


Dishwasher 


2 


ivs 


Drinking fountain 


Vfe 


11/4 


Emergency floor drains 





2 


Floor drains 


2 


■;,:■ 2 ..,. 


Kitchen sink 


2 


'.IV* 


Laundry tray 


"2 


1V& 


Lavatory 


1 


1V4 


Mop basin 


2 


2 


Service sink 


2 


1V$ 


Shower (each head) 


2 


VA 


Sink 


2 


VA> 


Urinal 


4 


2 


Water closet, private 


4 


— 


Water closet, public 


6 


. . ■— 


Water closet, pneumatic assist, private or 






public installation 


4 a 


— 



Note a. For the purpose of computing loads on building drains and sewers, water 
closets shall not be rated at a lower drainage fixture unit unless the lower values 
are confirmed by testing. 

Table P-603.1(2) 
DRAINAGE FIXTURE UNIT VALUES FOR FIXTURE DRAINS OR TRAPS 



Size (inches) 


Drainage fixture unit value 


1V4 or less 


1 


V/z 


2 


2 


3 


2te 


4 '■ 


3 


5 


4 


6 



P-603.1.1 Values for continuous flow: Dmin&gz fixture unit 
values for continuous or semi continuous flow into a drainage 
system, such as from a pump, sump ejector, air conditioning 
equipment or similar device, shall be computed on the basis 
that one fixture unit is equivalent to l ] /z gallons per minute 
(28 I/m).' 

P-603.2 Pipe sizing: Sanitary drainage pipes shall be sized in 
accordance with Tables P-603.2(l) and P-603.2(2) based on the 
drainage fixture unit load. Future fixtures that are roughed-in 
shall be included in the drainage fixture unit load. 

P-603.3 Sizing of horizontal offsets: Horizontal offsets of 
sanitary drainage stacks shall be sized in accordance with Table 
P-603.2(l). For purposes of sizing the stack, the horizontal offset 
shall be classified as part of the stack. 





Table P-603. 2(1) 






BUILDING DRAINS AND SEWERS 




Maximum number of fixture units connected to any 


Diameter 


portion of the building drain or the building sewer, 


of pipe 


including branches of the building drain 


(inches) 


Slope per foot 3 




Vie inch 


Vfc inch 


1/4 inch 


V* inch 


1V4 






1 


1 


IV2 






3 


3 


2 






21 


26 


2V2 






24 


31 


3 




36 


42 


50 


4 




180 


216 


250 


5 




390 


480 


575 


6 




700 


840 


1,000 


8 


1,400 


1,600 


1,920 


2,300 


10 


2,500 


2,900 


3,500 


4,200 


12 


2,900 


4,600 


5,600 


6,700 


15 


7,000 


8,300 


10,000 


12,000 



Note a. 1 inch per foot = 83.3 mm/m. 

Table P-603.2(2) 
HORIZONTAL FIXTURE BRANCHES AND STACKS 3 





Maximum number of fixture units 




Total for a 

horizontal 

branch 


Stacks b 


Diameter of 

pipe 

(inches) 


Total 

discharge 

into one 

branch 

interval 


Total for 
stack of 

three 
branch 
intervals 

or less 


Total for 

stack 
greater than 

three 
branch 
intervals 


IV2 
2 

3 

4 

5 

6 

8 

10 
12 
15 


3 

6 

12 

20 

160 

360 

620 

1,400 

2,500 

3,900 

7,000 


2 
6 
9 

20 

90 

200 

350 

600 

1,000 

1,500 

Notec 


4 

10 

20 

48 

240 

540 

960 

2,200 

3,800 

6,000 

Notec 


8 

24 

42 

72 

500 

1,100 

1,900 

3,600 

5,600 

8,400 

Notec 



Note a. Does not include branches of the building drain. Refer to Table P- 
603.2(1). 

Note b. Stacks shall be sized based on the total accumulated connected load at 
each story or branch interval. As the total accumulated connected load decreases, 
stacks are permitted to be reduced in size. Stack diameters shall not be reduced 
to less than one-half of the diameter of the largest stack size required. 

Note c. Sizing load based on design criteria. 

SECTION P-604.0 DRAINAGE PIPING INSTALLATION 

P-604.1 Slope of horizontal drainage piping: Horizontal 
drainage piping shall be installed in uniform alignment at 
uniform slopes. The minimum slope of a horizontal drainage 
pipe shall be in accordance with Table P-604. 1 . 



Table P-604.1 
SLOPE OF HORIZONTAL DRAINAGE PIPE 


Size (inches) 


Minimum slope (inch per foot) 3 


2V& or less 
3 to 6 
8 or larger 


V4 

Vfi 
Vie 



Note a. 1 inch per foot = 83.3 mm/m 



26 



F-604.2 Continuous flow: The size of the drainage piping shall 
not be reduced in size in the direction of the flow. A 4-inch by 
3-inch water closet connection shall not be considered as a 
reduction in size. 

P-604.3 Connections to offsets and bases of stacks: Horizontal 
branches shall connect to horizontal stack offsets and to the 
bases of stacks at a point located not less than ten pipe diameters 
downstream from the stack. 

P-604.4 Future fixtures: Drainage piping for future fixtures 
shall terminate with an approved cap or plug. 

P-604.5 Dead ends: In the installation or removal of any part of 
a drainage system, dead ends shall be prohibited. Cleanout 
extensions and approved future fixture drainage piping shall not 
be considered as dead ends. 

P-604.6 Flood hazard: All drainage piping located in a flood- 
hazard zone (A Zone) or a high-hazard zone (V Zone) shall be 
capable of resisting hydrostatic and hydrodynamic loads and 
stresses, including the effects of buoyancy, during the occurrence 
of flooding to the base flood elevation. 

SECTION P-605.0 FITTINGS AND CONNECTIONS 

P-605.1 Approval: All connections and changes in direction of 
the sanitary drainage system shall be made with approved 
drainage fittings. The fittings shall not obstruct or retard flow in 
the system. 

P-605.2 Installation of fittings: Fittings shall be installed to 
guide sewage and waste in the direction of flow. Change in 
direction shall be made by fittings installed in accordance with 
Table P-605.2. Change in direction by combination fittings, side 
inlets, increasers or reducers shall be installed in accordance with 
Table P-605.2 based on the pattern of flow created by the fitting. 
Double sanitary tee patterns shall not receive the discharge of 
blowout fixtures and fixtures or appliances with pumping action 
discharge. 

Table P-605.2 
FITTINGS FOR CHANGE IN DIRECTION 





Change in direction 


Type of fitting pattern 


Horizontal to 


Vertical to 


Horizontal to 




vertical 


horizontal 


horizontal 


Sixteenth bend 


X 


X 


X 


Eighth bend 


X 


X 


X 


Sixth bend 


X 


x ■■■■■:■;,- 


■:-v-'v : ;x-v---.\: 


Quarter bend 


X 


-■■■■-'■•■- x c 


x c ■-■"■ 


Short sweep 


X 


X a,c 


x c 


Long sweep 


X 


X 


X 


Sanitary tee 


x b 






Wye 


X 


■■■■■ ■■■ : X---y:: 


--v;x/::.--- 


Combination wye and 








eighth bend 


X 


X 


X 



Note a. 3 inches and larger. 

Note b. For a limitation on double sanitary tees, see Section P-605.2. 

Note c. The fittings shall only be permitted for a 2-inch or smaller fixture drain. 

SECTION P-606.0 SEWAGE PUMPS AND EJECTORS 

P-606.1 Sumps: Building subdrains shall discharge into an 
approved sump. The sump shall ha»ve a gas-tight cover and be 
vented in accordance with Section P-904.2. The capacity of the 
sump or the setting of controls shall be such that the storage 



SANITARY DRAINAGE SYSTEMS 



period does not exceed 12 hours. Minimum sump dimensions 
shall be 1 8 inches (457 mm) in diameter and 24 inches (6 1 mm) 
deep, or as required to ensure at least 15 seconds per pump 
running cycle. 

P-606.2 Sewage pumps and sewage ejectors: A sewage pump 
or sewage ejector shall automatically discharge the contents of 
the sump to the building drainage system. 

P-606.2.1 Capacity: A sewage pump or sewage ejector shall 
have the capacity and head for the application requirements. 
Pumps or ejectors which receive the discharge of water 
closets shall be capable of handling spherical solids with a 
diameter of up to and including 2 inches (51 mm). Other 
pumps or ejectors shall be capable of handling spherical 
solids with a diameter of up to and including 1 inch ( 1 3 mm). 
The minimum capacity of a pump or ejector based on the 
diameter of the discharge pipe shall be in accordance with 
Table P-606.2.1. 

Exception: Grinder pumps or grinder ejectors that receive 
the discharge of water closets shall have a minimum 
discharge opening of 1 Va inches. 

Table P-606.2.1 
MINIMUM CAPACITY OF SEWAGE PUMP OR SEWAGE EJECTOR 



Diameter of the discharge pipe 
(inches) 


Capacity of pump or ejector 
(gallons per minute) 3 


2 

2V2 

3 


21 
30 

46 



Note a. 1 gallon per minute = 3.78 l/m. 

P-606.2.2 Check valve: The discharge pipe shall have an 
approved check valve installed between the pump or ejector 
and the point of discharge. 



27 



CHAPTER 7 



INDIRECT WASTE PIPING AND SPECIAL WASTE 



SECTION P-701.0 GENERAL 

F-701.1 Scope: This chapter shall govern matters concerning 
indirect waste piping and special wastes. This chapter shall 
further control matters concerning food-handling estab- 
lishments, sterilizers, clear-water wastes, swimming pools, 
methods of providing air breaks or air gaps, and neutralizing 
devices for corrosive wastes. 

SECTION P-702.0 DEFINITIONS 

P-702.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Air break (drainage system): A piping arrangement in which a 
drain from a fixture, appliance or device discharges indirectly 
into another fixture, receptacle or interceptor at a point below 
the flood level rim. 

Air gap (drainage system): The unobstructed vertical distance 
through the free atmosphere between the outlet of the waste 
pipe and the flood level rim of the receptacle into which the 
waste pipe is discharging. 

Indirect waste pipe: A waste pipe that does not connect directly 
with the drainage system, but that discharges into the 
drainage system through an air break or air gap into a trap, 
fixture, receptor or interceptor. 

Swimming pool: Any structure, basin, chamber, or tank contain- 
ing an artificial body of water for swimming, diving or 
recreational bathing, and having a depth of 2 feet (610 mm) 
or more at any point. 

SECTION P-703.0 INDIRECT WASTES 

F-703.1 Where required: Food-handling equipment and clear- 
water waste shall discharge through an indirect waste pipe as 
specified in Sections P-703.1.1 through P-703.1.3. 

P- 703.1.1 Food handling: Equipment and fixtures utilized 
for the storage, preparation and handling of food shall dis- 
charge through an indirect waste pipe by means of an air gap. 

Exception: This requirement shall not apply to dishwash- 
ing machines and dishwashing sinks. 

P-703.1.2 Potable clear-water waste: Where devices and 
equipment, such as sterilizers, lawn sprinkler systems, swim- 
ming pools and relief valves, discharge potable water to the 



building drainage system, the discharge shall be through an 
indirect waste pipe by means of an air gap. 

P-703.1.3 Nonpotable clear-water waste: Where devices 
and equipment, such as process tanks, filters, drips and 
boilers, discharge nonpotable water to the building drainage 
system, the discharge shall be through an indirect waste pipe 
by means of an air break. 

P-703.2 Installation: All indirect waste piping shall discharge 
through an air gap or air break into a waste receptor or standpipe. 
Waste receptors and standpipes shall be trapped and vented and 
shall connect to the building drainage system. All indirect waste 
piping that exceeds 2 feet (610 mm) in developed length 
measured horizontally, or 4 feet (1219 mm) in total developed 
length, shall be trapped. 

P-703.2. 1 Air gap: The air gap between the indirect waste 
pipe and the flood level rim of the waste receptor shall be a 
minimum of twice the effective opening of the indirect waste 
pipe. 

P-703.2.2 Air break: An air break shall be provided between 
the indirect waste pipe and the trap seal of the waste receptor 
or standpipe. 

P-703.3 Waste receptor: Every waste receptor shall be of an 
approved type. A removable strainer or basket shall cover the 
waste outlet of waste receptors. Waste receptors shall be installed 
in ventilated spaces. Waste receptors shall not be installed in 
bathrooms or toilet rooms. Ready access shall be provided to 
waste receptors. 

P-703.3.1 Size of receptor: A waste receptor shall be sized 
for the maximum discharge of all indirect waste pipes served 
by the receptor. Receptors shall be installed to prevent splash- 
ing. 

P- 703.3.2 Clear-water waste receptors: Waste receptors 
receiving only clear-water wastes shall be permitted in the 
form of a hub or pipe extending not less than 2 inches (51 
mm) above a water-impervious floor, and are not required to 
have a strainer. 

P-703.4 Standpipes: Standpipes shall be individually trapped. 
Standpipes shall extend a minimum of 18 inches (457 mm) and 
a maximum of 42 inches (1066 mm) above the trap. Standpipes 
having a l!/2-inch diameter which serve domestic automatic 
clothes washers, shall extend a minimum of 30 inches (762 mm) 



29 



THE BOCA NATIONAL PLUMBING CODE/1993 



above the trap. Access shall be provided to all standpipe traps 
and drains for rodding. 

P-703.5 Waste-water temperature: Steam pipes shall not con- 
nect to any part of a drainage or plumbing system, nor shall any 
water above 140 degrees F. (60 degrees C.) be discharged into 
any part of & drainage system.. Such pipes shall discharge into an 
indirect waste receptor connected to the drainage system. 

SECTION P-704.0 SPECIAL WASTES 

P-704.1 Neutralizing device required for corrosive wastes: 

Corrosive liquids, spent acids, or other harmful chemicals which 
destroy or injure a drain, sewer, soil or waste pipe, or create 
noxious or toxic fumes, or interfere with sewage treatment 
processes, shall not be discharged into the plumbing system 
without being thoroughly diluted, neutralized or treated by pass- 
ing through an approved dilution or neutralizing device. Such 
devices shall be automatically provided with a sufficient supply 
of diluting water or neutralizing medium so as to make the 
contents non injurious before discharge into the drainage system. 
The nature of the corrosive or harmful waste and the method of 
its treatment or dilution shall be approved prior to installation. 

P- 704.2 System design: A chemical drainage and vent system 
shall be designed and installed in accordance with this code. 
Chemical drainage and vent systems shall be completely 
separated from the sanitary systems. Chemical waste shall not 
discharge to a sanitary drainage system until such waste has been 
treated in accordance with Section P-704.1. 



30 



CHAPTER 8 



STORM DRAINAGE SYSTEMS 



SECTION P-801.0 GENERAL 

P-801.1 Scope: This chapter shall govern methods of installation 
of storm drains, maximum projected roof area for drains of 
various slopes, size of roof gutters and vertical leaders, size of 
combined building drains and sewers, building subdrains, 
methods of installation, roof drains and general utilization. 

SECTION P-802.0 DEFINITIONS 

P-802.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Area drain: A receptacle designed to collect surface or storm 

water from an open area. 

Building drain 

Combined: A building drain that conveys both sewage and 
storm water or other drainage. 

Storm: A building drain that conveys storm water or other 
drainage, but not sewage. 

Building sewer 

Combined: A building sewer that conveys both sewage and 
storm water or other drainage. 

Storm: A building sewer that conveys storm water or other 
drainage, but not sewage. 

Conductor: A pipe inside the building which conveys storm 
water from the roof to a storm or combined building drain. 

Drainage system 

Storm: A drainage system that carries rainwater, surface 
water, condensate, cooling water or similar liquid wastes. 

Leader: An exterior drainage pipe for conveying storm water 
from roof or gutter drains. 

Roof drain: A drain installed to receive water collecting on the 
surface of a roof and to discharge such water into a leader or 
a conductor. 

Sewer 

Sanitary sewer: A sewer that carries sewage and excludes 
storm, surface and ground water. 

Storm sewer: A sewer that conveys rainwater, surface water, 
condensate, cooling water, or similar liquid wastes. 

Subsoil drain: A drain that collects subsurface water and con- 
veys such water to a place of disposal. 



Sump pump: An automatic water pump powered by an electric 
motor for the removal of drainage, except raw sewage, from 
a sump, pit or low point. 

SECTION P-803.0 WHERE REQUIRED 

P-803.1 General: All roofs, paved areas, yards, courts and 
courtyards shall drain into a separate storm sewer system, or a 
combined sewer system, or to an approved place of disposal. For 
one- and two-family dwellings, and where approved, storm 
water is permitted to discharge onto flat areas, such as streets or 
lawns, provided that the storm water Hows away from the 
building. 

P-803.2 Cleanouts required: Cleanouts shall be installed in the 
storm drainage system and shall comply with the provisions of 
this code for drainage pipe cleanouts. 

SECTION P-804.0 STORM WATER DRAINAGE SYSTEM INSTALLATION 

P-804.1 General: Storm water shall not be drained into sanitary 
sewers. 

P-804.2 Slope of horizontal drainage piping: Horizontal 
drainage piping, excluding gutters, shall be installed with a 
minimum slope of Vz inch per foot unless otherwise approved. 

P-804.3 Continuous flow: The size of a drainage pipe shall not 
be reduced in the direction of flow. 

P-804.4 Flood hazard: All drainage piping located in a flood- 
hazard zone (A Zone) or a high-hazard zone (V Zone) shall be 
capable of resisting hydrostatic and hydrodynamic loads and 
stresses, including the effects of buoyancy, during the occurrence 
of flooding to the base flood elevation. 

P-804.5 Fittings and connections: All connections and changes 
in direction of the storm drainage system shall be made with 
approved drainage- type fittings in accordance with Table P- 
605.2. The fittings shall not obstruct or retard flow in the system. 

SECTION P-805.0 SIZE OF BUILDING STORM DRAINS, 
BUILDING STORM SEWERS AND LEADERS 

P-805.1 Size of horizontal drains and sewers: The size of the 
building storm drains, building storm sewers and any horizontal 
branches of such drains or sewers shall be based upon the 
maximum projected roof or paved area to be drained. The size 
shall be determined in accordance with Table P-805.1, and 
adjusted to local rainfall rates listed in Appendix A. 



31 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table P-805.1 
SIZE OF HORIZONTAL BUILDING STORM DRAINS AND BUILDING STORM SEWERS 3 





Maximum projected area 


, in square feet, and flow, in gallons per minute, for various slopes b 


Diameter of drain 
(inches) 


1 /& inch per foot slope 


Va inch per foot slope 


V^ inch per foot slope 




Square feet 3 


Gallons per minute 


Square feet 3 


Gallons per minute 


Square feet 3 


Gallons per minute 


3 


3,288 


34 


4,640 


48 


6,576 


68 


4 


7,520 


78 


10,600 


110 


15,040 


156 


5 


13,360 


139 


18,880 


196 


26,720 


278 


6 


21,400 


222 


30,200 


314 


42,800 


445 


8 


46,000 


478 


65,200 - 


677 


92,000 


956 


10 


82,800 


860 


116,800 


1,214 


165,600 


1,721 


12 


133,200 


1,384 


188,000 


1,953 


266,400 


2,768 


15 


238,000 


2,473 


336,000 


3,491 


476,000 


4,946 



Note a. Table P-805.1 is based upon a maximum rate of rainfall of 1 inch per hourfora 1-hour duration and a 100-year return period. The figure for drainage area shall 
be adjusted to local conditions by dividing by the local rate in inches per hour. See Appendix A. 
Note b. 1 inch per foot = 83.3 mm/m; 1 square foot = 0.093 m 2 ; 1 gallon per minute = 3.78 l/m; 1 inch - 25.4 mm. 



P-805.2 Size of vertical conductors and leaders: The size of 
vertical leaders shall be based on the maximum projected roof 
area in accordance with Table P-805.2, and adjusted to local 
rainfall rates listed in Appendix A. 

Table P-805.2 
SIZE OF VERTICAL CONDUCTORS AND LEADERS 3 



Size of leader or 


Maximum projected roof area 


conductor* 5 
(inches) 


Square feet ac 


Gallons per minute 


2 

2V& 

3 

4 

5 

6 

8 


2,176 
3,948 
6,440 
13,840 
25,120 
40,800 
88,000 


23 
41 
67 
144 
261 
424 
913 



Note a. Table P-805.2 is based upon a maximum rate of rainfall of 1 inch per 
hour for a 1-hour duration and a 100-year return period. The figure for drainage 
area shall be adjusted to local conditions by dividing by the local rate in inches per 
hour. See Appendix A. 

Note b. The area of rectangular leaders shall be equivalent to the circular leader 
or conductor required. The width-to-depth ratio of rectangular leaders shall not 
exceed 3:1. 

Note c. 1 inch per foot = 83.3 mm/m; 1 square foot = 0.093 m ; 1 gallon per 
minute = 3.78 l/m; 1 inch = 25.4 mm. 



P-805.3 Size of roof gutters: The size of semicircular gutters 
shall be based on the maximum projected roof area in accordance 
with Table P-805.3, and adjusted to local rainfall rates listed in 
Appendix A. 

P-805.4 Size of combined drains and sewers: The size of a 
combination sanitary and storm drain or sewer shall be computed 
in accordance with the method in Section P-805.1. The fixture 
units shall be converted into an equivalent projected roof or 
paved area. Where the total fixture load on the combined drain 
is less than 256 fixture units, the equivalent drainage area in 
horizontal projection shall be taken as 4,000 square feet (372 m 2 ). 
Where the total fixture load exceeds 256 units, each additional 
fixture unit shall be considered the equivalent of 15.6 square feet 
(1.5 m 2 ) of drainage area. 

P-805.5 Values for continuous flow: Where there is a con- 
tinuous or semi continuous discharge into the building storm 
drain or building storm sewer, such as from a pump, ejector, air 
conditioning plant or similar device, each gallon per minute of 
such discharge shall be computed as being equivalent to 96 
square feet (9 m 2 ) of roof area, based upon a 1 -inch (25 mm) 
rainfall. 



Table P-805.3 
SIZE OF SEMICIRCULAR ROOF GUTTERS 3 









Maximum projected roof area 


for gutters of various slopes 




Diameter ot 
gutter b 


t/i6 inch per foot slope 


1/1* inch per foot slope 


1/4 inch per foot slope 


1/? inch per foot slope 


(inches) 


Square feet 3 


Gallons per 
minute 


Square feet a 


Gallons per 
minute 


Square feet 3 


Gallons per 
minute 


Square feet 3 


Gallons per 
minute 


3 


680 


7 


960 


10 


1,360 


14 


1,920 


20 


4 


1,440 


15 


2,040 


21 


2,880 


30 


4,080 


42 


5 


2,500 


26 


3,520 


37 


5,000 


52 


7,080 


74 


6 


3,840 


40 


5,440 


57 


7,680 


80 


11,080 


115 


7 


5,520 


57 


7,800 


81 


11,040 


115 


15,600 


162 


8 


7,960 


83 


11,200 


116 


14,400 


165 


22,400 


233 


10 


14,400 


150 


20,400 


212 


28,800 


299 


40,000 


416 



Note a. Table P-805.3 is based upon a maximum rate of rainfall of 1 inch per hour for a 1 -hour duration and a 100-year return period. The figure for drainage area shall 
be adjusted to local conditions by dividing by the local rate in inches per hour. See Appendix A. 
Note b. Gutters, other than semicircular, shall have an equivalent cross-sectional area. 
Note c. 1 inch per foot = 83.3 mm/m; 1 square foot = 0.093 m 2 ; 1 gallon per minute = 3.78 l/m; 1 inch = 25.4 mm. 



32 



STORM DRAINAGE SYSTEMS 



SECTION P-806.0 BUILDING SUBDRAINS 

P-806.1 Sump: Building subdrains located below the public 
sewer level shall discharge into a sump or receiving tank, the 
contents of which shall be automatically lifted and discharged 
into the drainage system as required for building sumps, or into 
another type of approved disposal system. The subsoil sump 
shall not be required to have either a gas-tight cover or a vent. 

P-806.2 Sump pump systems: A sump pump system shall 
include the sump pump, pit, discharge piping, and an individual 
branch electrical circuit. The system shall include a pump with 
a capacity and head appropriate for the anticipated application 
requirements. 

P-806.3 Sump pit: The size of the sump pit shall be as specified 
by the sump pump manufacturer. The pit shall be topped by a 
removable cover adequate to support anticipated loads in the 
area ofinstallation. The pit floor shall provide permanent support 
for the sump pump. The pit shall be constructed of tile, concrete, 
steel, plastic or other approved material. 

P-806.4 Discharge piping: Where discharging into a storm or 
sanitary sewer system, a suitable antisiphon device or free-flow 
check valve shall be installed. Where discharge to separate 
sanitary and storm sewers is required, two independent sump 
pump systems shall be required. Discharge pipe size and fittings 
shall be the same size as, or larger than, the sump pump discharge 
tapping. 

SECTION P-807.0 SUBSOIL DRAINS 

P-807.1 General: Where the subsoil drain for a structure is 
subject to backflow, such subsoil drain shall be protected by a 
backwater valve. Access shall be provided to the backwater 
valve. Subsoil drains shall discharge to a trapped area drain, 
sump, dry well or approved location above grade. 

SECTION P-808.0 TRAPS ON STORM DRAINS AND LEADERS 

P-808.1 Where required: Leaders, conductors and storm 
drains, where connected to a combined sewer, shall be trapped. 

P-808.2 Trap size: Traps for individual conductors shall be the 
same size as the horizontal drain to which the traps are con- 
nected. 

P-808.3 Method of installation: Individual storm water traps 
shall be installed on the storm drain branch serving each storm 
water inlet, or a single trap shall be installed in the main storm 
drain before connection of the main storm drain with the com- 
bined building sewer or public sewer. Such traps shall be 
provided with a cleanout. Access shall be provided to the 
clean out. 

SECTION P-809.0 CONDUCTORS AND CONNECTIONS 

P-809.1 Improper utilization prohibited: Conductors shall not 
be utilized as soil, waste or vent pipes, nor shall drainage or vent 
pipes be utilized as conductors. 

P-809.2 Protection of leaders: Leaders installed along al- 
leyways, driveways or other locations exposed to damage shall 
be recessed into the wall or otherwise protected by metal guards. 



P-809.3 Separate storm and sanitary drainage: The sanitary 
and storm drainage systems of a structure shall be entirely 
separate. 

Exception: Where a combined sewer is utilized, the building 
storm drain shall be connected in the same horizontal plane 
through a single- wye fitting to the combined sewer at least 1 
feet (3048 mm) downstream from any soil stack. 

P-809.4 Double connections of storm drains: Where the 
sanitary and storm drains are connected on both sides of the 
combined sewer, single wyes shall be utilized and the require- 
ments of Section P-809.3 shall apply to the location of connec- 
tions. 

SECTION P-810.0 ROOF DRAINS 

P-810.1 General: All roof areas, except those draining to hang- 
ing gutters, shall be equipped with roof drains with strainers 
extending not less than 4 inches (102 mm) above the surface of 
the roof, and shall have an available inlet area not less than two 
times the area of the conductor or leader to which the drain is 
connected. 

P-810.2 Roof design: Roofs shall be designed for the maximum 
possible depth of water that will pond thereon as determined by 
the relative levels of roof deck and overflow weirs, scuppers, 
edges or serviceable drains in combination with the deflected 
structural elements. In determining the maximum possible depth 
of water, all primary roof drainage means shall be assumed to be 
blocked. 

P-810.3 Flat decks: Roof drain strainers for utilization on sun 
decks, parking decks and similar areas normally serviced and 
maintained, are permitted to be of a flat-surface type and level 
with the deck, and shall have an available inlet area not less than 
two times the area of the conductor or leader to which the drain 
is connected. 

P-810.4 Roof drain flashings required: The connection be- 
tween roofs and roof drains passing through the roof and into the 
interior of the structure shall be made water tight by an approved 
flashing material. 

SECTION P-811.0 CONTROLLED FLOW ROOF DRAIN SYSTEMS 

P-811.1 General: The roof of a structure shall be designed for 
the storage of water where the storm drainage system, is en- 
gineered for controlled flow. The controlled flow system shall 
be designed based on the local rainfall rate listed in Appendix A. 

P-811.2 Control devices: The control devices shall be installed 
so that the rate of discharge of water per minute shall not exceed 
the rates indicated in Tables P-805.1 and P-805.2 and utilizing 
values for continuous flow as indicated in Section P-805.5. 

P-811.3 Installation: Runoff control shall be by control devices. 
Control devices shall be protected by strainers. 

P-811.4 Sizing: Not less than two roof drains shall be installed 
in roof areas 10,000 square feet (930 m 2 ) or less and not less than 
four roof drains shall be installed in roofs over 1 0,000 square feet 
(930 m 2 ) in area. 



33 



CHAPTER 9 



VENTS AND VENTING 



SECTION P-901.0 GENERAL 

P-901.1 Scope: This chapter shall govern the selection and 
installation of piping, tubing and fittings for vent systems. This 
chapter shall control the minimum diameter of vent pipe, in- 
dividual vents and relief vents, and the size and length of vents 
and various aspects of vent stacks and stack vents. Additionally, 
this chapter regulates vent grades and connections, height above 
fixtures, hydraulic gradient and relief vents for stacks and fixture 
traps and the venting of sumps and sewers. 

P-901.2 Chemical vent system: The vent system for a chemical 
waste system shall be independent of the sanitary vent system 
and shall terminate separately through the roof to the open air. 

SECTION P-902.0 DEFINITIONS 

P-902.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Branch vent: A vent connecting one or more individual vents 
with a vent stack or stack vent. 

Circuit vent: A vent that connects to a horizontal drainage 
branch and vents two traps to a maximum of eight traps or 
trapped fixtures connected in a battery. 

Developed length: The length of a pipeline measured along the 
centerline of the pipe and fittings. 

Fixture branch: A drain serving one or more fixtures and which 
discharges to another drain or to a stack. 

Fixture drain: The drain from the trap of a fixture to a junction 
with any other drain pipe. 

Horizontal branch drain: A drainage branch pipe extending 
laterally from a soil or waste stack or building drain, with or 
without vertical sections or branches, which receives the 
discharge from one or more fixture drains and conducts the 
discharge to the soil or waste stack or to the building drain. 

Individual vent: A pipe installed to vent a fixture drain. An 
individual vent connects with the vent system above the 
fixture served or terminates outside the structure into the open 
air. 

Main vent: The principal artery of the venting system to which 

vent branches are connected. 



Relief vent: An auxiliary vent that permits additional circulation 
of air in or between drainage and vent systems. 

Stack vent: The extension of a soil or waste stack above the 
highest horizontal drain connected to the stack. 

Sump vent: A vent from pneumatic sewage ejectors or similar 
equipment which terminates separately to the open air. 

Vent pipe: Part of the vent system. 

Vent stack: A vertical vent pipe installed to provide circulation 
of air to and from the drainage system. 

Vent system: A pipe or pipes installed to provide a flow of air to 
or from a drainage system, or to provide a circulation of air 
within such system to protect trap seals from siphonage and 
back pressure. 

Yoke vent: A pipe connecting upward from a soil or waste stack 
to a vent stack for the purpose of preventing pressure changes 
in the stack. 

SECTION P-903.0 WHERE REQUIRED 

P-903.1 Individual vent: Every trap and trapped fixture shall be 
provided with an individual vent, except as otherwise provided 
for in Chapters 9 and 1 8. The individual vent shall connect to the 
fixture drain of the trap or trapped fixture being vented. 

P- 903.2 Trap seal: The vent system shall be designed and 
installed so that the trap seal shall be subject to a maximum 
pneumatic pressure differential equal to 1-inch (25 mm) water 
column. 

SECTION P-904.0 VENT PIPE SIZING 

P- 904.1 General: The diameter of individual vents, branch 
vents, circuit vents, relief vents, vent stacks and stack vents shall 
be at least one-half the required diameter of the drain served. The 
required size of the drain shall be determined in accordance with 
Chapter 6. Vent pipes shall not be less than 1 Va inch in diameter. 
Vents exceeding 40 feet (12192 mm) in developed length shall 
be increased by one nominal pipe size. 

P-904.L1 Developed length: The developed length of in- 
dividual, branch, circuit and relief vents shall be measured 
from the farthest point of vent connection to the drainage 
system, to the point of connection to the vent stack, stack vent 
or termination outside of the building. 



35 



THE BOCA NATIONAL PLUMBING CODE/1993 



P-904.1.2 Multiple branch vents: Where multiple branch 
vents are connected to a common branch vent, the common 
branch vent shall be sized in accordance with this section, 
based on the size of the common horizontal drainage branch 
that is or would be required to serve the total drainage fixture 
unit (dfu) load being vented. 

P-904.2 Sump vents: Sump vent sizes shall be determined in 
accordance with Sections P-904.2. 1. and P-904.2.2. 

P-904.2.1 Sewage pumps and sewage ejectors other than 
pneumatic: Drainage piping below sewer level shall be 
vented in a similar manner to that of a gravity system. Build- 
ing sump vent sizes for sumps with sewage pumps or sewage 
ejectors, other than pneumatic, shall be determined in accord- 
ance with Table P-904.2.1. 

P-904.2.2 Pneumatic sewage ejectors: The air pressure 
relief pipe from a pneumatic sewage ejector shall be con- 
nected to an independent vent stack terminating as required 
for vent extensions through the roof. The relief pipe shall be 
sized to relieve air pressure inside the ejector to atmospheric 
pressure, but shall not be less than VA inches in size. 

SECTION P-905.0 VENT STACKS AND STACK VENTS 

P-905.1 Main vent required: Every sanitary drainage system 
receiving the discharge of a water closet shall have a main vent 
that is either a vent stack or a stack vent. 

P-905.2 Vent stack required: A vent stack shall be required for 
every drainage stack that is five branch intervals or more. 

P-905.3 Vent termination: Every vent stack or stack vent shall 
extend outdoors and terminate to the open air. 

P-905.4 Vent connection at base: Every vent stack shall con- 
nect to the base of the drainage stack. The vent stack shall 
connect at or below the lowest horizontal branch. Where the vent 
stack connects to the building drain, the connection shall be 



located within ten pipe diameters downstream of the drainage 
stack. The size of the vent stack connection to the drainage stack 
shall not be less than the size required for the vent stack. 

P-905.5 Vent for horizontal offset of drainage stack: Horizon- 
tal offsets of drainage stacks shall be vented where five or more 
branch intervals are located above the offset. The offset shall be 
vented by venting the upper section of the drainage stack and the 
lower section of the drainage stack. 

P-905.5.1 Upper section: The upper section of the drainage 
stack shall be vented as a separate stack with a vent stack 
connection installed in accordance with Section P-905.4. The 
offset shall be considered the base of the stack. 

P-905,5.2 Lower section: The lower section of the drainage 
stack shall be vented by a yoke vent connecting between the 
offset and the next lower horizontal branch. The yoke vent 
connection shall be permitted to be a vertical extension of the 
drainage stack. The size of the yoke vent and connection shall 
be a minimum of the size required for the vent stack of the 
drainage stack. 

P-905.6 Vent headers: Stack vents and vent stacks connected 
into a common vent header at the top of the stacks and extending 
to the open air at one point shall be sized in accordance with the 
requirements of Section P-904.1. The number of fixture units 
shall be the sum of all fixture units on all stacks connected 
thereto, and the developed length shall be the longest vent length 
from the intersection at the base of the most distant stack to the 
vent terminal in the open air, as a direct extension of one stack. 
A reduction in the vent size to 75 percent of the combined areas 
of the vents so connected is permitted where approved. 

SECTION P-906.0 VENT TERMINALS 

P-906.1 Extension above roofs: Extension of vent pipes 
through a roof shall be terminated a minimum of 12 inches (305 
mm) above the roof. Where a roof is to be utilized tor any purpose 



Table P-904.2.1 
SIZE AND LENGTH OF SUMP VENTS 



Discharge capacity 


Maximum developed length of vent (feet) ad 


of pump (gallons 






Diameter of vent (inches) 






per minute) d 














1V4 


V/i 


2 2V& 


3 


4 


10 


No limit b 


No limit 


No limit 


No limit 


No limit 


No limit 


20 


270 


No limit 


No limit 


No limit 


No limit 


No limit 


40 


72 


160 


No limit 


No limit 


No limit 


No limit 


60 


31 


75 


270 


No limit 


No limit 


No limit 


80 


16 


41 


150 


380 


No limit 


No limit 


100 


10 c 


25 


97 


250 


No limit 


No limit 


150 


Not permitted d 


10 c 


44 


110 


370 


No limit 


200 


Not permitted 


Not permitted 


20 :■:■■.■■■■ 


60 


210 


No limit 


250 


Not permitted 


Not permitted 


■■.■:■■■■■•■, -10, .:■■■- 


36 


132 


No limit 


300 


Not permitted 


Not permitted 


V 10° 


22 


88 


380 


400 


Not permitted 


Not permitted 


Not permitted 


10 c 


44 


210 


500 


Not permitted 


Not permitted 


Not permitted 


Not permitted 


24 


130 



Note a. Developed length plus an appropriate allowance for entrance losses and friction due to fittings, changes in direction and diameter. Suggested allowances shall 
be obtained from NBS Monograph 31 or other approved sources. An allowance of 50 percent of the developed length shall be assumed if a more precise value is not 
available. 

Note b. Actual values greater than 500 feet. 

Note c. Less than 10 feet. 

Note 1 1 foot = 304.8 mm; 1 gallon per minute = 3.78 j/m. 



36 



VENTS AND VENTBNG 



other than weather protection, the vent extensions shall extend a 
minimum of 7 feet (21 34 mm) above the roof. 

P-906.2 Location of vent terminal: Vent terminals shall not be 
located directly beneath any door, window or other ventilating 
opening of the structure or of an adjacent structure, nor shall any 
such vent terminal be within 10 feet (3048 mm) horizontally of 
such an opening unless such vent terminal is at least 2 feet (610 
mm) above the top of such opening. 

P-906.3 Extension through the wall: Vent terminals extending 
through the wall shall terminate a minimum of 10 feet (3048 mm) 
from the lot line and 10 feet (3048 mm) above average ground 
level. Vent terminals shall not terminate under the overhang of a 
structure with soffit vents. Side wall vent terminals shall be 
protected to prevent birds or rodents from entering or blocking 
the vent opening. 

P-906.4 Extension outside a structure: In climates with freez- 
ing temperatures, vent pipes installed on the exterior of the 
structure shall be protected against freezing by insulation, heat 

or both. 

SECTION P-907.0 VENT GRADES AND CONNECTIONS 

P-907.1 Connection: All individual, branch and circuit vents 
shall connect to a vent stack, stack vent or extend to the open air. 

Exception: Individual, branch and circuit vents shall be 
permitted to terminate at an air admittance valve in accord- 
ance with Section P- 1808.0. 

P-907.2 Vent grade: All vent pipes and branch vents shall be 
graded and connected so as to drain back to the soil or waste pipe 
by gravity. 

P-907.3 Vent connection to drainage system: Every dry vent 
connecting to a horizontal drain shall connect above the center- 
line of the horizontal drain pipe. 

P-907.4 Vertical rise of vent: Every dry vent shall rise vertically 
to a minimum of 6 inches ( 1 52 mm) above the flood level rim of 
the highest trap or trapped fixture being vented. 

P-907.5 Height above fixtures: A connection between a vent 
pipe and a vent stack or stack vent shall be made a minimum of 
6 inches (152 mm) above the flood level rim of the highest fixture 
vented by the vent pipe. Horizontal vent pipes forming branch 
vents, relief vents and circuit vents shall be a minimum of 6 
inches (152 mm) above the flood level rim of the highest fixture 
being vented. 

P- 907.6 Vent for future fixtures: Where the drainage piping has 
been roughed- in for future fixtures, a rough- in connection for a 
vent shall be installed a minimum of one-half the diameter of the 
drain. The vent rough-in shall connect to the vent system. The 
connection shall be identified to indicate that the connection is 
a vent. 

SECTION P-908.0 WET VENTING 

P-908.1 Wet vent permitted: Any combination of fixtures 
within two bathroom groups located on the same floor level are 
permitted to be vented by a wet vent. The wet vent shall be 
considered the vent for the fixtures and shall extend from the 
connection of the dry vent along the direction of the flow in the 



drain pipe, to the most downstream fixture drain connection to 
the horizontal branch drain. Only the fixtures being wet vented 
shall connect to the wet-vented horizontal branch drain. Any 
additional fixtures shall discharge downstream of the wet vent. 

P-908.2 Vent connection: The dry vent connection to the wet 
vent shall be an individual vent or common vent to the lavatory, 
bidet, shower or bathtub. 

P-908.3 Size: The wet vent shall be of a minimum size as 
specified in Table P-908.3, based on the fixture unit discharge to 
the wet vent. 

Table P-908.3 
WET VENT SIZE 



Wet vent pipe size (inches) 


Fixture unit load (dfu) 


1V 2 
2 

2V2 
3 


1 

4 

6 

12 



SECTION P-909.0 COMMON VENTS 

P-909.1 Individual vent as common vent: An individual vent 

is permitted to vent two traps or trapped fixtures as a common 
vent. The traps or trapped fixtures being common vented shall 
be located on the same floor level. 

Exception: Three lavatories are permitted to be common 
vented by an individual vent. 

P-909.2 Connection at the same level: Where thcfixture drains 
being common vented connect at the same level, the vent con- 
nection shall be at the interconnection of the fixture drains or 
downstream of the interconnection. 

P-909.3 Connection at different levels: Where the fixture 
drains connect at different levels, the vent shall connect as a 
vertical extension of the vertical drain. The vertical drain pipe 
connecting the two fixture drains shall be considered the vent for 
the lower fixture drain, and shall be sized in accordance with 
Table P-909.3. 

Table P-909.3 
COMMON VENT SIZES 



Pipe size (inches) 


Maximum discharge from upper 
fixture drain (dfu) 


1V 2 

2 

2Vi> to 3 


1 
4 
6 



SECTION P-910.0 CIRCUIT VENTING 

P-910.1 Circuit vent permitted: A maximum of eight fixtures 
connected to a horizontal branch drain shall be permitted to be 
circuit vented. Each fixture drain shall connect horizontally to 
the horizontal branch being circuit vented. The horizontal 
branch drain shall be classified as a vent from the most 
downstream fixture drain connection to the most upstream fix- 
ture drain connection to the horizontal branch. 

P-910.1.1 Multiple circuit-vented branches: Circuit- 
vented horizontal branch drains are permitted to be con- 
nected together. Each group of a maximum of eight fixtures 



37 



THE BOCA NATIONAL PLUMBING CODE/1993 



shall be considered a separate circuit vent and shall conform 
to the requirements of this section. 

P-910.2 Vent connection: The circuit vent connection shall be 
located between the two most upstream fixture drains. The vent 
shall connect to the horizontal branch and be installed in accord- 
ance with Section P-907.0. The circuit vent pipe shall not receive 
the discharge of any soil or waste. 

P-910.3 Slope and size of horizontal branch: The maximum 
slope of the vent section of the horizontal branch drain shall be 
1 inch per foot (83 mm/m). The entire length of the vent section 
of the horizontal branch drain shall be sized for the total 
drainage discharge to the branch. 

P-910.3.1 Size of multiple circuit vent: Each separate cir- 
cuit-vented horizontal branch that is interconnected shall be 
sized independently in accordance with Section P-910.3. The 
downstream circuit-vented horizontal branch shall be sized 
for the total discharge into the branch, including the upstream 
branches and the fixtures within the branch. 

P-910.4 Relief vent: A relief vent shall be provided for circuit- 
vented horizontal branches receiving the discharge of four or 
more water closets and connecting to a drainage stack that 
receives the discharge of soil or waste from upper horizontal 
branches. 

P-910.4.1 Connection and installation: The relief vent shall 
connect to the horizontal branch drain between the stack and 
the most downstream fixture drain of the circuit vent. The 
relief vent shall be installed in accordance with Section 
P-907.0. 

P-910.4.2 Fixture drain or branch: The relief vent is per- 
mitted to be a fixture drain or fixture branch for fixtures 
located within the same branch interval as the circuit-vented 
horizontal branch. The maximum discharge to a relief vent 
shall be four fixture units. 

P-910.5 Additional fixtures: Fixtures, other than the circuit- 
vented fixtures, are permitted to discharge to the horizontal 
branch drain. Such fixtures shall be located on the same floor as 
the circuit-vented fixtures and shall be either individually or 
common vented. 

SECTION P-911 .0 FIXTURE VENTS 

P-911.1 Distance of trap from vent: Each fixture trap shall have 
a protecting vent so located that the developed length of the 
fixture drain from the trap weir to the vent fitting is within the 
requirements set forth in Table P-91 1.1 . 

Table P-911.1 
MAXIMUM DISTANCE OF FIXTURE TRAP FROM VENT 3 



Size of trap 


Size of fixture 


Slope 


Distance from 


(inches) 


drain (inches) 


(inch per foot) 3 


trap (feet) a 


1V4 


11/4 


1/4 


31/5 


1V4 


11/5 


1/4 


5 


//.,; .-Ill* 


V/i 


1/4 


5 


:.VIVS 


2 


1/4 


8 


/-- 2 


2 


1/4 


6 


3 


3 


1/8 


10 


4 


4 


1/8 


12 



P-911.2 Venting of fixture drains: The vent for a fixture drain, 
except where serving a fixture with integral traps, such as water 
closets, shall connect above the weir of the fixture trap being 
vented. 

P-911.3 Crown venting limitation: Vents shall not be installed 
within two pipe diameters of the trap weir. 

SECTION P-912.0 RELIEF VENTS FOR STACKS OF MORE THAN 
TEN BRANCH INTERVALS 

P-912.1 Relief vent required: Relief vents shall be provided for 
every drainage stack greater than ten branch intervals. A relief 
vent shall be installed every tenth branch interval measured 
downward from the highest horizontal branch connecting to the 
stack. Every relief vent shall connect to the vent stack. 

SECTION P-913.0 COMBINATION DRAIN AND VENT SYSTEM 

P-913.1 Type of fixtures: A combination drain and vent system 

shall not serve fixtures other than floor drains, standpipes, sinks 
and lavatories. 

P-913,2 Installation: The only vertical pipe of a combination 
drain and vent system shall be the connection between the fixture 
branch of a sink, lavatory or standpipe, and the horizontal 
combination drain and vent pipe. The maximum vertical distance 
shall be 8 feet (2438 mm). 

P-913.2.1 Slope: The horizontal combination drain and vent 
pipe shall have a maximum slope of V2 inch per foot (42 
mm/m). The minimum slope shall be in accordance with 
Table P-604.1. 

P-913.2.2 Connection: The combination drain and vent pipe 
shall connect to a horizontal drain that is vented or a vent shall 
connect to the combination drain and vent. The vent connect- 
ing to the combination drain and vent pipe shall extend 
vertically a minimum of 6 inches (152 mm) above the flood 
level rim of the highest fixture being vented before offsetting 
horizontally. 

P-913.2.3 Vent size: The vent shall be sized for the total 
fixture wm'rload in accordance with Section P-904.1. 

P-913.2.4 Fixture branch or drain: The fixture branch or 

fixture drain shall connect to the combination drain and vent 
within a distance specified in Table P-9 11.1. The combination 
drain and vent pipe shall be considered the vent for the fixture. 

P-913.3 Size: The minimum size of a combination drain and vent 
pipe shall be in accordance with Table P-91 3.3. 

Table P-913.3 
SIZE OF COMBINATION DRAIN AND VENT PIPE 



Diameter 


Maximum number of fixture units (dfu) 


pipe 
(inches) 


Connecting to a horizontal 
branch or stack 


Connecting to a building 
drain or building subdrain 


2 

3 

4 
5 
6 


3 
6 

12 

20 

160 

360 


4 

26 

31 

50 

250 

575 



Note a. 1 inch per foot = 83.3 mm/m; 1 foot = 304.8 mm. 



38 



SECTION P-914.0 ISLAND FDCTURE VENTING 

P-914.1 Limitation: Island fixture venting shall not be per- 
mitted for fixtures other than sinks and lavatories. Residential 
kitchen sinks with a dishwasher waste connection, a food waste 
grinder, or both, in combination with the kitchen sink waste, shall 
be permitted to be vented in accordance with this section. 

P-914.2 Vent connection: The island fixture vent shall connect 
to the fixture drain as required for an Individual or common vent. 
The vent shall rise vertically to above the drainage outlet of the 
fixture being vented before offsetting horizontally or vertically 
downward. The vent or branch vent for multiple island fixture 
vents shall extend to a minimum of 6 inches ( 1 52 mm) above the 
highest island fixture being vented before connecting to the 
outside vent terminal. 

P-914.3 Vent installation below the fixture flood level rim: 

The vent located below the flood level rim of the fixture being 
vented shall be installed as required for drainage piping in 
accordance with Chapter 6, except for sizing. The vent shall be 
sized in accordance with Section P-904.0. The lowest point of 
the island fixture vent shall connect full size to the drainage 
system. The connection shall be to a vertical drain pipe or to the 
top half of a horizontal drain pipe. Cleanouts shall be provided 
in the island fixture vent to permit rodding of all vent piping 
located below the Hood level rim of the fixtures. Rodding in both 
directions shall be permitted through a cleanout. 

SECTION P-915.0 WASTE STACK VENT 

P-915.1 Waste stack vent permitted: A waste stack shall be 
considered a vent for all of the fixtures discharging to the stack 
where installed in accordance with the requirements of this 
section. 

P-915.2 Stack installation: The waste stack shall be vertical, 
and both horizontal and vertical offsets shall be prohibited. Every 
fixture drain shall connect separately to the waste stack. The 
stack shall not receive the discharge of water closets or urinals. 

P-915.3 Stack vent: A stack vent shall be provided for the waste 
stack. The size of the stack vent shall be equal to the size of the 
waste stack. 

P-915.4 Waste stack size: The waste stack shall be sized based 
on the total discharge to the stack and the discharge within a 
branch interval in accordance with Table P-915.4. The waste 
stack shall be the same size throughout the length of the waste 
stack. 

Table P-915.4 
WASTE STACK VENT SIZE 





Maximum number of fixture units (dfu) 


Stack size (inches) 


Total discharge into 


Total discharge for 




one branch interval 


stack 


V/z 


1 


2 


2 


2 


4 


2te 


No limit 


8 


3 


No limit 


24 


4 


No limit 


50 


5 


No limit 


75 


6 


No limit 


100 



VENTS AND VENTING 



SECTION P-916.0 FROST CLOSURE 

P-916.1 General: Where the 97 16-percent value for outside 
design temperature as determined from Appendix A of the 
mechanical code listed in Chapter 19 or other approved source 
is less than degrees R (-18 degrees G), every vent extension 
through a roof or wall shall be a minimum of 3 inches in diameter. 
Any increase in the size of the vent shall be made inside the 
structure a minimum of .1 foot (305 mm) below the roof or inside 
the wall. 

SECTION P-917.0 OTHER UTILIZATION PROHIBITED 

P- 9 17.1 General: The plumbing vent system shall not be utilized 
for purposes other than the venting of the plumbing system. 



39 



CHAPTER 10 



TRAPS, INTERCEPTORS, SEPARATORS 
AND BACKWATER VALVES 



SECTION M001.0 GENERAL 

P- 1001.1 Scope: This chapter shall govern the installation of 
traps, interceptors, separators and backwater valves. 

SECTION P-1002.0 DEFINITIONS 

P- 1002.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Buiiding trap: A device, fitting or assembly of fittings installed 
in the building drain to prevent circulation of air between the 
drainage system of the building and the building sewer. 

Combination fixture: A fixture combining one sink and laundry 
tray or a two- or three -compartment sink or laundry tray in 
one unit. 

Interceptor: A device designed and installed so as to separate 
and retain for removal by automatic or manual means, 
deleterious, hazardous or undesirable matter from normal 
wastes, while permitting normal sewage or wastes to dis- 
charge into the drainage system by gravity. 

Trap: A fitting or device which provides a liquid seal to prevent 
the emission of sewer gases without materially affecting the 
flow of sewage or waste water through the trap. 

Trap seal: The vertical distance between the crown weir and the 
top of the dip of the trap. 

SECTION P-1003.0 FIXTURE TRAPS 

P-1003.1 Separate traps for each fixture: Each plumbing 
fixture shall be separately trapped by a water-seal trap, except as 
otherwise permitted by this code. The trap shall be placed as 
close as possible to the fixture outlet. The vertical distance from 
the fixture outlet to the trap weir shall not exceed 24 inches (610 
mm). A fixture shall not be double trapped. A clothes washer or 
laundry tub shall not discharge to a trap serving a kitchen sink. 

Exceptions 

1. This section shall not apply to fixtures with integral 
traps. 

2. A combination plumbing fixture is permitted to be 
installed on one trap, provided that one compartment is 
not more than 6 inches ( 1 52 mm) deeper than the other 
compartment and the waste outlets are not more than 
30 inches (762 mm) apart. 



3. One trap is permitted to be installed for a set of not more 
than three single-compartment sinks, laundry trays or 
lavatories, which are adjacent to each other and in the 
same room. The trap shall be centrally located where 
three such fixtures are installed. 

4. A grease interceptor intended to serve as a fixture trap 
in accordance with the manufacturer's installation in- 
structions, shall be permitted to serve as the trap for a 
single fixture or a combination sink of not more than 
three compartments where the vertical distance from 
the fixture outlet to the inlet of the interceptor does not 
exceed 30 inches (762 mm), and the developed length 
of the waste pipe from the most upstream fixture outlet 
to the inlet of the interceptor does not exceed 60 inches 
(1524 mm). 

P-1003.2 Size of fixture traps: Fixture trap size shall be suffi- 
cient to drain the fixture rapidly and not less than the size 
indicated in Table P-603. 1( 1 ). A trap shall not be larger than the 
drainage pipe into which the trap discharges. 

P-1003.3 Prohibited traps: The following types of traps are 
prohibited: 

1 . Traps that depend upon moving parts to maintain the seal. 

2. Bell traps. 

3. Crown-vented traps. 

4. Separate fixture traps that depend on interior partitions for 
the seal. 

5. "S" traps. 

6. Drum traps, except where approved. 

P-1003.4 Design of traps: Fixture traps shall be self-scouring 
and shall not have interior partitions, except where such traps are 
integral with the fixture. Slip joints shall be permitted on the trap 
inlet, trap outlet or within the trap seal. 

P- 1003.5 Trap seals: Each fixture trap shall have a liquid seal 
of not less than 2 inches (5 1 mm) and not more than 4 inches 
(102 mm). Where a trap seal is subject to loss by evaporation, a 
deep-seal trap consisting of a 4-inch ( 1 02 mm) seal or a trap seal 
primer valve shall be installed. A trap seal primer valve shall 
conform to ASSE 1018 or 1044 listed in Chapter 19. 

P-1003.6 Trap setting and protection: Traps shall be set level 
with respect to the trap seal and, where necessary, shall be 
protected from freezing. 



41 



THE BOCA NATIONAL PLUMBING CODE/1993 



P-1003.7 Building traps: Building (house) traps shall not be 
installed, except where required by the code official. Where 
installed, each building trap shall be provided with a cleanout 
and a relief vent or fresh air intake on the inlet side of the trap. 
The size of the relief vent or fresh air intake shall not be less than 
one-half the diameter of the drain to which the relief vent or air 
intake connects. Such relief vent or fresh air intake shall be 
carried above grade and shall be terminated in a screened outlet 
located outside the building. 

P-1003.8 Acid-resisting traps: Where a vitrified clay or other 
brittle ware, acid-resisting trap is installed underground, such 
trap shall be embedded in concrete extending 6 inches (152 mm) 
beyond the bottom and sides of the trap. 

P- 1003.9 Recess for trap connection: A recess provided for 
connection of the underground trap, such as one serving a 
bathtub in slab-type construction, shall have sides and a bottom 
of corrosion-resistant, insect and vermin-proof construction. 

SECTION P-1004.0 INTERCEPTORS AND SEPARATORS 

P- 1004.1 Interceptors required: Interceptors for oil, grease, 
sand and other substances harmful or hazardous to the building 
drainage system,, the public sewer or sewage treatment plant or 
processes shall be provided as required in this chapter. 

P-1004.1.1 Interceptor not required: A grease interceptor 
shall not be required for individual dwelling units or any 
private living quarters. 

P-1004.2 Separators required: At repair garages, gasoline sta- 
tions with grease racks, grease pits or work racks, and at factories 
where oily and flammable liquid wastes are produced, separators 
shall be installed into which all oil-bearing, grease-bearing or 
flammable wastes shall be discharged before emptying in the 
building drainage system or other point of disposal. 

P-1004.3 Size, type and location to be approved: The size, type 

and location of each interceptor and of each separator, shall be 
approved, and wastes that do not require treatment or separation 
shall not be discharged into any interceptor or separator 

P- 1004.4 Grease interceptors: Grease interceptors shall con- 
form to PDI G .101 listed in Chapter 19. 

P-1004.5 Efficiency of interceptors: Interceptors shall be rated 
for efficiency. 

P-1004.6 Grease interceptors required: A grease interceptor 
shall be required to receive the drainage from fixtures and 
equipment with grease-laden waste located in food preparation 
areas, such as in restaurants, hotel kitchens, bars, factory 
cafeterias or restaurants and clubs. Food waste grinders shall not 
discharge to the building drainage system through a grease 
interceptor. 

P-1004.6.1 Interceptor capacity: Grease interceptors shall 
have the grease retention capacity indicated in Table P- 
1004.6. .1 for the flow-through rates indicated. 

P- 1004.6.2 Rate of flow controls: Grease interceptors shall 
be equipped with devices to control the rate of water flow so 
that the water flow does not exceed the rated flow. 



Table P-1004.6.1 
CAPACITY OF GREASE INTERCEPTORS 



Total flow-through rating 


Grease retention capacity 


(gallons per minute) 3 


(pounds) 3 


4 


8 


6 


12 


7 


14 


9 


18 


10 


20 


12 


24 


14 


28 


15 


30 


18 


36 


20 


40 


25 


50 


35 


70 


50 


100 



Note a. 1 gallon per minute = 3.785 l/m; 1 pound = 0.454 kg. 

P-1004.7 Separation of liquids: A mixture of treated or un- 
treated light and heavy liquids with various specific gravities 
shall be separated in an approved receptacle. Separators shall be 
designed in accordance with Sections P- 1004.7. 1 and P- 

1004.7.2. 

P-1004.7.1 General design requirements: Oil separators 
shall have a depth of not less than 2 feet (610 mm) below the 
invert of the discharge drain. The outlet opening of the 
separator shall have not less than an 1 8-inch (457 mm) water 

seal. 

P- 1004.7.2 Garages and service stations: Where 
automobiles are serviced, greased, repaired, washed or where 
gasoline is dispensed, separators shall have a minimum 
capacity of 6 cubic feet (0. 1 68 m 3 ) for the first 1.00 square feet 
(9.3 m 2 ) of area to be drained, plus 1 cubic foot (0.028 m 3 ) for 
each additional 1 00 square feet (9.3 m 3 ) of area to be drained 
into the separator. Parking garages in which servicing, repair- 
ing or washing is not conducted, and in which gasoline is not 
dispensed, shall not require a separator. Areas of commercial 
garages utilized only for storage of automobiles are not re- 
quired to be drained through a separator. 

P-1004.8 Sand interceptors, commercial establishments: 

Sand and similar interceptors for heavy solids shall be designed 
and located so as to be provided with ready access for cleaning, 
and shall have a water seal of not less than 6 inches (152 mm). 

P-1004.9 Laundries: Commercial laundries shall be equipped 
with an interceptor with a wire basket or similar device, remov- 
able for cleaning, which prevents passage into the drainage 
system of solids x h inch (13 mm) or larger in size, string, rags, 
buttons or other materials detrimental to the public sewerage 
system. 

P-1004.10 Bottling establishments: Bottling plants shall dis- 
charge process wastes into an interceptor that will provide for 
the separation of broken glass or other solids before discharging 
waste into the drainage system. 

P- 1004. 11 Slaughterhouses: Slaughtering room and dressing 

room drains shall be equipped with approved separators. The 
separator shall prevent the discharge into the drainage system of 
feathers, entrails and other materials that cause clogging. 



42 



TRAPS, INTERCEPTORS, SEPARATORS AND BACKWATER VALVES 



P- 1004.12 Venting of interceptors and separators: Intercep- 
tors and separators shall be designed so as not to become air 
bound where tight covers are utilized. Each interceptor or 
separator shall be vented where subject to a loss of trap seal 

P-1004.13 Access and maintenance of interceptors and 

separators: Ready access shall be provided to each interceptor 
and separator for service and maintenance. Interceptors and 
separators shall be maintained by periodic removal of accumu- 
lated grease, scum, oil or other floating substances and solids 
deposited in the interceptor or separator. 

SECTION P-1 005.0 BACKWATER VALVES 

P- 1005.1 Approval: Metallic backwater valves shall conform to 
ASME Al 12.14.1 listed in Chapter 19. Nonmetallic backwater 
valves shall conform to CSA CAN3-B181.1 or CAN/CSA 
B181.2 listed in Chapter 19. 

P- 1005.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Back/low 

Drainage: A reversal of flow in the drainage system. 

Backwater valve: A device or valve which is installed in the 
house drain or sewer pipe where a sewer is subject to back- 
flow, and which prevents drainage or waste from backing into 
a low level or fixtures and causing a flooding condition. 

P- 1005.3 Fixtures subject to backflow: A backwater valve 
shall be installed where plumbing fixtures are subject to back- 
flow from the public sewer. 

P-1005.4 Location of backwater valves: Backwater valves 
shall be installed so that access is provided to the working parts 
for service and repair. 



43 



CHAPTER 11 



DRAINAGE PIPE CLEANOUTS 



SECTION P-1101.0 GENERAL 

P-1101.1 Scope: This chapter shall govern the size, location, 
installation and maintenance of drainage pipe cleanouts. 

SECTION P-1 102.0 DEFINITIONS 

P- 1102.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Cleanout: An access opening in the drainage system utilized for 
the removal of obstructions. Types of cleanouts include a 
removable plug or cap, a removable fixture trap and a water 
closet. 

SECTION P-1103.0 WHERE REQUIRED 

P- 1103.1 Horizontal drains within buildings: All horizontal 
drains 4 inches in diameter or less shall have cleanouts located 
not more than 50 feet (15240 mm) apart. All horizontal drains 
larger than 4 inches in diameter shall have cleanouts located not 
more than 1 00 feet (30480 mm) apart. 

P-1103.2 Building sewers: All building sewers shall have 
cleanouts located not more than 100 feet (30480 mm) apart. 

P-1103.3 Changes of direction: Cleanouts shall be installed at 
each change of direction of the building drain or of horizontal 
waste or soil lines, which is greater than 45 degrees (0.79 rad). 
Where more than one change of direction occurs in a run of 
piping, only one cleanout shall be required for each 40 feet 
(121 92 mm) of developed length of the drainage piping. Access 
shall be provided to all cleanouts. 

P-1103.4 Base of stack: A cleanout shall be provided at the base 
of each waste or soil stack. 

P-1103.5 Building drain and building sewer junction: There 
shall be a cleanout at the junction of the building drain and the 
building sewer. The cleanout shall be either inside or outside the 
building wall and shall be brought up to the finished ground level 
or to the basement floor level. The cleanout at the junction of the 
building drain and building sewer shall not be required if the 
cleanout on a 3-inch or larger diameter vertical soil stack is 
located within 10 feet (3048 mm) of the building drain and 
building sewer connection. 

SECTION P-1104.0 UNDERGROUND DRAINAGE 

P- 1104.1 General: Cleanouts for an underground drain or sewer 
shall extend to the ground or floor level. 



SECTION P-1105.0 CONCEALED PIPING 

P- 1105.1 General: Cleanouts on concealed piping shall extend 
through and terminate flush with the finished wall or floor. Pits 
or chases, sized to permit removal of the cleanout plug and 
cleaning of the system, shall be incorporated in the wall or floor. 

SECTION P-1106.0 DIRECTION OF FLOW 

P-1106.1 General: Every cleanout shall be installed to open in 
the direction of the flow of the drainage pipe or at right angles 
thereto. 

SECTION P-1107.0 CLEANOUT SIZE 

P- 1107.1 General: Cleanouts shall be of the same size as the 
pipes served, up to 4 inches. Cleanouts for pipes larger than 4 
inches shall be sized in accordance with Table P- 1 1 07. 1 . 



Table P-1107.1 
CLEANOUT SIZES 


Nominal pipe size 
(inches) 


Nominal size cleanout 
(inches) 


5 
6 
8 

10 and above 


4 
4 
6 
8 



SECTION P-1108.0 MANHOLES 

P- 1108.1 Building sewers: Building sewers 10 inches in 
diameter or larger shall have approved manholes for cleanouts. 
Manholes shall be located at every change of direction, eleva- 
tion, grade and size of the building sewer and at intervals not 
more than 400 feet (122 m). 

P- 1108.2 Building drains: Underground building drains 10 
inches in diameter or larger shall have cleanouts in accordance 
with Section P-1107.1 or manholes in accordance with Section 
P-1 108.1. The manhole shall have secured gas-tight covers. 

P- 1108.3 Flood hazard: All manhole covers located in a flood- 
hazard zone (A zone) or a high-hazard zone (V Zone) shall either 
be elevated to or above the base flood elevation or shall be sealed 
to resist hydrostatic and hydrodynamic loads and stresses, in- 
cluding the effects of buoyancy, during the occurrence of flood- 
ing to the base flood elevation. 



45 



THE BOCA NATIONAL PLUMBING CODE/1993 



SECTION P-1109.0 CLEANOUT CLEARANCES 

P-1109.1 Clearances: Cleanouts on 6-inch and smaller pipes 

shall have a clearance of not less than 18 inches (457 mm) for 
rodding. Cleanouts on 8-inch and larger pipes shall have a 
clearance of not less than 36 inches (914 mm) for rodding. 

SECTION M 11 0.0 ACCESS TO CLEANOUTS 

P-1110.1 Permanent covers prohibited: Cleanout plugs shall 
not be covered with cement, plaster or any other permanent 
finish material. Where necessary to conceal a cleanout plug, a 
cover plate or access door shall provide access to the plug. 

P-1110.2 Prohibited installation: Cleanout openings shall not 
be utilized for the installation of new fixtures or floor drains, 
except where approved and where another cleanout of equal 
access and capacity is provided. 



46 



CHAPTER 12 



PLUMBING FIXTURES 



SECTION P-1201.0 GENERAL 

P- 120.1.1 Scope: This chapter shall govern the installation of 
plumbing fixtures in accordance with the type of occupancy, and 
shall provide for the minimum number of fixtures for various 
types of occupancies. 

SECTION P-1202.0 DEFINITIONS 

P- 1202.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Plumbing appliance: Any one of a special class of plumbing 
fixtures which is intended to perform a special function. 
Included are fixtures having the operation or control depend- 
ent upon one or more energized components, such as motors, 
controls, heating elements, or pressure or temperature sensing 
elements. 

Such fixtures are manually adjusted or controlled by the 
owner or operator, or are operated automatically through one 
or more of the following actions: a time cycle, a temperature 
range, a pressure range, a measured volume or weight. 

Plumbing appurtenance: A manufactured device or prefabri- 
cated assembly of component parts which is an adjunct to the 
basic piping system and plumbing fixtures. An appurtenance 
does not demand additional water supply, nor add any dis- 
charge load to a fixture or to the drainage system. 

Plumbing fixture: A receptacle or device which is either per- 
manently or temporarily connected to the water distribution 
system of the premises, and demands a supply of water 
therefrom; or discharges waste water, liquid-borne waste 
materials, or sewage either directly or indirectly to the 
drainage system of the premises; or requires both a water 
supply connection and a discharge to the drainage system of 
the premises. 

Private: In the classification of plumbing fixtures, "private" 
applies to fixtures in residences and apartments, and to fix- 
tures in nonpublic toilet rooms of hotels and motels and 
similar installations in buildings where the plumbing fixtures 
are intended for utilization by a family or an individual. 

Public or public utilization: In the classification of plumbing 
fixtures, "public" applies to fixtures in general toilet rooms 
of schools, gymnasiums, hotels, railroad stations, public 
buildings, bars, public comfort stations and other installations 



where a number of fixtures are installed so that their utiliza- 
tion is similarly unrestricted. 

WalS-hung water closet: A wall-mounted water closet installed 
in such a way that the fixture does not touch the floor. 

Whirlpool bathtub: A bathtub fixture that is equipped and fitted 
with a circulation piping system, pump and similar appur- 
tenances, and is so designed to accept, circulate and discharge 
bathtub water. 

SECTION P-1203.0 CONNECTIONS TO PLUMBING 
SYSTEM REQUIRED 

P- 1203.1 General: All plumbing fixtures and drains that receive 
or discharge wastes or sewage shall be connected to the sanitary 
drainage system of the structure or premises. Clear-water waste 
shall be permitted to discharge to the storm drainage system 
where approved. 

SECTBON P-1204.0 MINIMUM PLUMBING FACILITIES 

P- 1204.1 Minimum number of fixtures: Plumbing fixtures 
shall be provided for the type of occupancy and in the minimum 
number shown in Table P- 1204.1. Types of occupancies not 
shown in Table P- 1204.1 shall be considered individually by the 
code official. The number of occupants shall be determined by 
the building code listed in Chapter 19. 

P- 1204.2 Separate facilities: Where plumbing fixtures are re- 
quired, separate facilities shall be provided for each sex. 

Exceptions 

1. Separate facilities shall not be required in residential 
occupancies. 

2. Separate employee facilities shall not be required in 
occupancies in which 15 or less people are employed. 

3. Separate facilities shall not be required in structures or 
tenant spaces with a total occupant load, including both 
employees and customers, of 15 or less in which food 
or beverage is served for consumption within the struc- 
ture or tenant space. 

P- 1204.3 Number of occupants of each sex: The required water 
closets, lavatories and showers or bathtubs shall be distributed 
equally between the sexes based on the percentage of each sex 
anticipated in the occupant load. The occupant load shall be 
composed of 50 percent of each sex, unless statistical data 
approved by the code official indicates a different distribution of 
the sexes. 



47 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table P-1204.1 

SVISNiMUM NUMBER OF PLUMBING FACILITIES 3 

Fixtures (Number of fixtures per number of occupants) 

(see Sections P-1204.2 and P-1204.3) 





Building use group 


Water closets 

(Urinals see 

Section P-1220.2) 


Lavatories 


Bathtubs/ 
showers 


Drinking fountains 

(see Section 

P-1 21 1.1) 


Others 




Male 


Female 




A-1 


Assembly, theaters 


1 per 125 


1 per 65 


1 per 200 




1 per 1,000 


1 service sink 


A-2 


Assembly, nightclubs 


1 per 40 


1 per 40 


1 per 75 




1 per 500 


1 service sink 




Assembly, restaurants 


1 per 75 


1 per 75 


1 per 200 




1 per 500 


1 service sink 


A-3 


Halls, museums, etc. 


1 per 125 


1 per 65 


1 per 200 




1 per 1,000 


1 service sink 




Coliseums, arenas 


1 per 75 


1 per 40 


1 per 150 




1 per 1,000 


1 service sink 


A-4 


Assembly, churches b 


1 per 150 


1 per 75 


1 per 200 




1 per 1,000 


1 service sink 


A-5 


Assembly, stadiums, pools, etc. 


1 per 100 


1 per 50 


1 per 150 




1 per 1,000 


1 service sink 


B 


Business 
(see Sections P-1204.2 and P-1 204.4) 


1 per 25 


1 per 40 




1 per 100 


1 service sink 


E 


Educational 


1 per 50 


1 per 50 




1 per 100 


1 service sink 


F 


Factory and industrial 


1 per 100 


1 per 100 


(see Section 
P-1 21 2.0) 


1 per 400 


1 service sink 


H 


High hazard 
(see Sections P-1204.2 and P-1 204.4) 


1 per 100 


1 per 100 


(see Section 
P-1 21 2.0) 


1 per 1,000 


1 service sink 


1-1 


Institutional, residential care 


1 per 10 


1 per 10 


1 per 8 


1 per 100 


1 service sink 




Institutional, hospitals, ambulatory nursing 
home patients c 


1 per room 6 


1 per room e 


1 per 15 


1 per 100 


1 service sink per floor 


I-2 


Day nurseries, sanitariums, nonambulatory 
nursing home patients, etc. c 


1 per 15 


1 per 15 


1 per 15 f 


1 per 100 


1 service sink 




Employees 


1 per 25 


1 per 35 




1 per 100 






Visitors 


1 per 75 


1 per 100 




1 per 500 






Institutional, prisons 


1 per cell 


1 per cell 


1 per 15 


1 per 100 


1 service sink 


I-3 


Asylums, reformatories, etc. c 


1 per 15 


1 per 15 


1 per 15 


1 per 100 


1 service sink 




Employees 


1 per 25 


1 per 35 




1 per 100 






Visitors 


1 per 75 


1 per 100 




1 per 500 




M 


Mercantile 
(see Sections P-1 204.2, P-1 204.4 and 
P-1204.5) 


1 per 500 


1 per 750 




1 per 1,000 


1 service sink 


R-1 


Residential, hotels, motels 


1 per guestroom 


1 per guestroom 


1 per guestroom 




1 service sink 


Lodges 


1 per 10 


1 per 10 


1 per 8 


1 per 100 


1 service sink 


R-2 


Residential, multiple family 


1 per dwelling unit 


1 per 
dwelling unit 


1 per 
dwelling unit 




1 kitchen sink per 
dwelling unit; 

1 automatic clothes 
washer connection per 
20 dwelling units 




Dormitories 


1 per 10 


1 per 10 


1 per 8 


1 per 100 


1 service sink 


R-3 


Residential, one- and two-family dwelling 


1 per dwelling unit 


1 per 
dwelling unit 


1 per 
dwelling unit 




1 kitchen sink per 

dwelling unit; 
1 automatic clothes 

washer connection per 

dwelling untt d 


S 


Storage 
(see Sections P-1204.2 and P-1 204.4) 


1 per 100 


1 per 100 


(see Section 
P-1212.0) 


1 per 1,000 


1 service sink 



Note a. The fixtures shown are based on one fixture being the minimum required forthe number of persons indicated or any fraction of the number of persons indicated. 
The number of occupants shall be determined by the building code listed in Chapter 19. 

Note b. Fixtures located in adjacent buildings under the ownership or control of the church shall be made available during periods the church is occupied. 

Note c. Toilet facilities for employees shall be separate from facilities for inmates or patients. 

Note d. For attached one- and two-family dwellings, one automatic clothes washer connection shall be required per 20 dwelling units. 

Note e. A single-occupant toilet room with one water closet and one lavatory serving not more than two adjacent patient rooms shall be permitted where such room 
is provided with direct access from each patient room and with provisions for privacy. 

Note f. For day nurseries, a maximum of one bathtub shall be required. 



48 



PLUMBING FIXTURES 



P-1204.4 Location of employee toilet facilities in occupancies 

other than Use Group A or M: Access to toilet facilities in 
occupancies other than Use Group A or M shall be from within 
the employees' regular working area. The required toilet 
facilities shall be located not more than one story above or below 
the employees' regular working area and the path of travel to 
such facilities shall not exceed a distance of 500 feet (152 m). 
Employee facilities shall be either separate facilities or public 
customer facilities. 

Exception: Facilities that are required for employees in 
storage structures or kiosks, and which are located in adjacent 
structures under the same ownership, lease or control, shall 
be a maximum travel distance of 500 feet (152 m) from the 
employees' regular working area. 

P- 1204.4.1 Location of employee toilet facilities in build- 
ings of Use Groups A and M: Employees shall be provided 
with toilet facilities in buildings and tenant spaces utilized as 
restaurants, nightclubs, places of public assembly and mer- 
cantile occupancies. The employee facilities shall be either 
separate facilities or public customer facilities. 

Exception: Employee toilet facilities shall not be required 
in tenant spaces of 900 square feet (84 m 2 ) or less where 
the travel distance from the main entrance of the tenant 
space to a central toilet area does not exceed 500 feet (152 
m) and such central toilet facilities are located not more 
than one story above or below the tenant space. 

P- 1204.5 Customer facilities: Customers, patrons and visitors 
shall be provided with public toilet facilities in structures and 
tenant spaces utilized as restaurants, nightclubs, places of as- 
sembly and mercantile occupancies. Customer toilet facilities 
shall be located not more than one story above or below the space 
required to be provided with customer toilet facilities and the 
path of travel to such facilities shall not exceed a distance of 500 
feet (152 m). In covered mall buildings, required facilities shall 
be based on total square footage, and facilities shall be installed 
in each individual store or in a central toilet area located in 
accordance with this section. The maximum travel distance to 
the central toilet facilities in covered mall buildings shall be 
measured from the main entrance of any store or tenant space. 

Exception: Customer facilities are not required in structures 
or tenant spaces with a customer occupant load of less than 
1 50 and which do not serve food or beverages to be consumed 
within the structure or tenant space. 

SECTION P 1205.0 ACCESSIBLE PLUMBING FACILITIES 

P- 1205.1 Where required: Toilet rooms and bathing facilities 
containing fixtures for occupants of a structure that is required 
to be accessible to a physically disabled person by the building 
code listed in Chapter 19, shall have at least one fixture of each 
type accessible to and usable by a physically disabled person. 
Where water closet compartments are provided in a toilet room 
or bathing facility, a wheelchair-accessible compartment shall be 
provided in accordance with Section P- 1205.2. Where six or 
more water closet compartments are provided in a toilet room or 
bathing facility, at least one ambulatory-accessible compartment 
shall be provided in accordance with Section P- 1205 .2 in addi- 
tion to the wheelchair-accessible compartment. Fixtures in 



dwelling units of multiple-family dwellings required to be adapt- 
able by the building code listed in Chapter 19 shall comply with 
CABO A117.1 listed in Chapter 1.9. Accessible routes to plumb- 
ing fixtures shall be provided in accordance with the require- 
ments of the building code listed in Chapter 19. 

Where drinking fountains or water coolers are provided on 
each floor, 50 percent but not less than one drinking fountain or 
water cooler per floor shall be accessible to and usable by 
physically disabled persons. 

Exceptions 

1. A private toilet room or bathing facility intended for 
utilization by a single occupant shall be permitted to be 
adaptable. 

2. Dwelling units, guestrooms and patient toilet rooms 
that are not required by the building code listed in 
Chapter 19 to be accessible or adaptable. 

P-1205.1.1 Use Groups A and E: Where showers are 
provided in gymnasium facilities in conjunction with sports 
activities, a minimum of one shower shall be accessible to and 
usable by physically disabled persons. 

P- 1205.2 Water closet compartment: The minimum net clear 
opening to the water closet compartment shall be 32 inches (8 1 3 
mm). The door shall swing out and away from the water closet 
compartment. The minimum clear width in front of the door to 
the water closet compartment shall be 48 inches ( 121 9 mm). The 
size and configuration of the water closet compartment or room 
shall conform to Section P-l 205.2. 1 or P- 1 205.2.2. The grab bars 
shall be mounted parallel to the floor a minimum of 33 inches 
(838 mm) and a maximum of 36 inches (914 mm) above the 
finished floor. 

P- 1205.2.1 Wheelchair-accessible compartment: The min- 
imum width of a wheelchair-accessible water closet compart- 
ment shall be 60 inches (1524 mm). The minimum length of 
the compartment shall be 56 inches (1422 mm) fbr wall- 
mounted water closets and 59 inches (1499 mm) for floor- 
mounted water closets. The water closet shall be mounted 1 8 
inches (457 mm) from the side wall of the compartment to the 
centerline of the water closet. 

P-1205.2.1.1 Grab bars: The compartment shall have a 
side grab bar a minimum of 42 inches ( 1 067 mm) in length 
and a rear grab bar a minimum of 36 inches (914 mm) in 
length. The side grab bar shall be mounted on the side wall 
closest to the water closet a maximum of 1 2 inches (305 
mm) from the rear wall and shall extend a minimum of 52 
inches (1321 mm) from the rear wall. The rear grab bar 
shall be mounted behind the water closet a maximum of 6 
inches (152 mm) from the closest side wall and shall 
extend a minimum of 24 inches (610 mm) beyond the 
centerline of the water closet away from the closest side 
wall. 

P- 1205.2.1.2 Lavatory in compartment: Where a 
lavatory is installed within the compartment the lavatory 
shall be located against the back wall adjacent to the water 
closet. The edge of the lavatory shall be a minimum of 18 
inches (457 mm) from the centerline of the water closet. 



49 



THE BOCA NATIONAL PLUMBING CODE/1993 



F-1205.2.2 Ambulatory-accessible compartment: The 
maximum width of an ambulatory-accessible water closet 
compartment shall be 36 inches (914 mm). The minimum 
length of the compartment shall be 60 inches (1524 mm). The 
water closet shall be mounted .18 inches (457 mm) from the 
side wall of the compartment to the centerline of the water 
closet. 

P-1205.2.2.1 Grab bars: Compartments shall have grab 
bars a minimum of 42 inches ( 1 067 mm) in length mounted 
on both sides of the compartment. The grab bars shall be 
mounted to a maximum of 12 inches (305 mm) from the 
rear wall and shall extend a minimum of 54 inches (1372 
mm) from the rear wall. 

P-l.205.2.3 Single-occupant rooms: Single-occupant toilet 
rooms or bathrooms shall have the water closet mounted 18 
inches (457 mm) from a side wall to the centerline of the water 
closet. The clear space around the water closet and the grab 
bars shall conform to the compartment size and grab bar 
requirements of Section P-l 205.2.1. The door to the room 
shall not swing into the water closet clear space. 

P- 1205.3 Water closet: The seat of the water closet shall be a 
minimum of 16 inches (406 mm) and a maximum of 20 inches 
(508 mm) above the finished floor. The water closet bowl shall 
be of the blowout, siphon -jet, re verse- trap, siphon -vortex or 

siphon-wash design. 

P-1205.4 Lavatory and kitchen sink: The minimum clear 
space in front of the lavatory shall be 30 inches (762 mm) by 30 
inches (762 mm) measured from the front face of the lavatory, 
kitchen sink, counter or vanity. The top of the lavatory shall be 
located a maximum of 35 inches (889 mm) above the finished 
floor. The top of the kitchen sink shall be located a maximum of 
34 inches (864 mm) above the finished floor. 

P-1205.4.1 Clearance: An unobstructed knee clearance a 
minimum of 29 inches (737 mm) high by 8 inches (203 mm) 
deep shall be provided from the face of the lavatory or kitchen 
sink. An unobstructed toe clearance a minimum of 9 inches 
(229 mm) high by 9 inches (229 mm) deep shall be provided 
from the lavatory wall. 

P- 1205.4.2 Piping: All exposed hot water piping under the 
lavatory or kitchen sink shall be insulated. 

P-1205.5 Faucet: The controls to operate a faucet shall be 
located a maximum of 25 inches (635 mm) from the front face 
of a lavatory, kitchen sink, counter or vanity. The faucet shall 
open and close with a maximum force of 5 pounds (22 N). 

P- 1205.6 Drinking fountain: The height of the drinking foun- 
tain or water cooler spout shall be a maximum of 36 inches (9 14 
mm) above the finished floor. The spout shall be located in front 
of the uni t. The flow of water from the spout shall rise a minimum 
of 4 inches (102 mm) above the basin. Hand controls to operate 
the fountain or cooler shall be located on the front or the side at 
the front edge of the unit. 

P-l 205.6.1 Clear space: The minimum clear space in front 
of the drinking fountain or water cooler shall be 30 inches 
(762 mm) measured away from the front edge of the unit by 
48 inches (1219 mm) wide. Units protruding from the wall 
shall be permitted to have the clear space reduced to 30 inches 



(762 mm) wide where the clear space underneath the unit 
conforms to the requirements of Section P-l 205.4. 

P- 1205.7 Bathtub and shower: Prefabricated shower or bathtub 
enclosures shall conform to CABO A 1.1 7.1 listed in Chapter 19. 
The minimum clear space in front of the bathtub or shower shall 
be 30 inches (762 mm) from the edge of the enclosure away from 
the unit and 48 inches (1219 mm) wide. Where the bathtub or 
shower is not accessible from the side, the clear space in front of 
the unit shall be increased to a minimum of 48 inches (1219 mm) 
by 48 inches (1219 mm) wide. Built-in-place shower or bathtub 
enclosures shall conform to Section P-l 205.7.1, P-l 205.7.2 or 
P-l 205.7.3. 

P- 1205.7.1 Bathtub enclosure: The bathtub shall have either 
a built-in seat, a seat at the end of the tub or a detachable seat. 
Two grab bars a minimum of 24 inches (610 mm) in length 
shall be mounted against the back wall in line with each other 
and parallel to the floor. The top grab bar shall be mounted a 
minimum of 33 inches (838 mm) and a maximum of 36 inches 
(914 mm) above the finished floor. The lower grab bar shall 
be mounted 9 inches (229 mm) above the flood level rim of 
the bathtub. A grab bar shall be mounted at each end of the 
bathtub at the same height as the top grab bar on the back wall. 
The grab bar at the end of the bathtub with the faucet shall be 
a minimum length of 24 inches (610 mm). The grab bar at the 
other end of the bathtub shall be a minimum length of 12 
inches (305 mm). Where the seat is located at the end of the 
bathtub, the grab bars shall not be installed at that end. The 
bathtub and shower faucet shall be located below the grab 
bars. 

P- 1205.7.2 Wide shower enclosure: The minimum width of 
the shower enclosure shall be 60 inches (1524 mm) and the 
minimum depth shall be 30 inches (762 mm). There shall not 
be a threshold on the shower floor. The shower shall be 
designed to permit the wheelchair to enter the enclosure. The 
shower valve shall be mounted on the back wall a minimum 
of 38 inches (965 mm) and a maximum of 48 inches (1219 
mm) above the shower floor. A grab bar shall be mounted 
along the entire length of the three walls a minimum of 33 
inches (838 mm) and a maximum of 36 inches (914 mm) 
above and parallel to the shower floor. 

P-1205.7.3 Square shower enclosure: The shower enclosure 
shall be 36 inches (914 mm) square. A seat a maximum of 16 
inches (406 mm) wide shall be mounted against the side wall 
for the entire depth of the enclosure. The seat shall be a 
minimum of 1 7 inches (432 mm) and a maximum of 1 9 inches 
(483 mm) above the finished floor. A grab bar shall be 
mounted parallel to the floor extending from the edge of the 
seat around the side wall opposite the seat. The grab bars shall 
be a minimum of 33 inches (838 mm) and a maximum of 36 
inches (914 mm) above the finished floor. The shower valve 
shall be mounted on the side wall opposite the seat, a mini- 
mum of 38 inches (965 mm) and a maximum of 48 inches 
(1219 mm) above the finished floor. 

P-1205.7.4 Faucet: Showers and bathtubs shall have a hand- 
held shower with a hose a minimum of 60 inches (1524 mm) 
in length. The faucet shall open and close with a maximum 



50 



PLUMBING FIXTURES 



force of 5 pounds (22 N). The shower and bathtub valve shall 
comply with Section P- 1225.6. 

P-1205.8 Grab bars: The diameter or width of a grab bar shall 
be a minimum of 1 Va inches (32 mm) and a maximum of \Vi 
inches (38 mm). Grab bars shall be spaced 1 1/2 inches (38 mm) 
from the wall. Grab bars shall not rotate. Grab bars shall be 
designed and constructed for the load requirements specified in 
the building code listed in Chapter 19. 

SECTION P-1206.0 INSTALLATION OF FIXTURES 

P- 1206.1 Access for cleaning: Plumbing fixtures shall be in- 
stalled so as to afford easy access for cleaning both the fixture 
and the area around the fixture. Where practical, all pipes from 
fixtures shall be routed to the nearest wall. 

P-1206.2 Convenience and function: Fixtures shall be set level 
and in proper alignment with reference to adjacent walls. 

P- 1206.2.1 Water closets, lavatories and bidets: A water 
closet, lavatory or bidet shall not be set closer than 15 inches 
(381 mm) from its center to any side wall, partition, vanity or 
other obstruction, nor closer than 30 inches (762 mm) center- 
to-center between toilets or adjacent fixtures. There shall be 
at least 18 inches (457 mm) clearance in front of the water 
closet or bidet to any wall, fixture or door. Water closet 
compartments shall not be less than 30 inches (762 mm) wide 
and 60 inches (1524 mm) deep. There shall be at least 18 
inches (457 mm) clearance in front of a lavatory to any wall, 
fixture or door (see Figure P- 1206.2.1). 

P-1206.2.2 Urinals: A urinal shall not be set closer than 15 
inches (381 mm) from the center of the urinal to any side wall, 
partition, vanity or other obstruction, nor closer than 30 
inches (762 mm) center- to -center between urinals (see Figure 
P-1206.2. 1). 



P-1206.3 Securing floor outlet fixtures: Floor outlet fixtures 
shall be secured to the floor or floor flanges by screws or bolts 
of corrosion-resistant material. 

P- 1206.4 Water-tight joints: Joints formed where fixtures come 
in contact with walls or floors shall be sealed. 

P-1206.5 Securing wall-hung water closet bowls: Wall-hung 
water closet bowls shall be supported by a concealed hanger 
attached to the building structural members so that strain is not 
transmitted to the closet connector or any other part of the 
plumbing system. The hanger shall conform to ASME A 1 1 2.6. 1 
listed in Chapter 19. 

P-1206.6 Water supply protection: The supply lines or fittings 
for every plumbing fixture shall be installed so as to prevent 

backflow. 

P- 1206.7 Design of overflows: Where any fixture is provided 
with an overflow, the waste shall be designed and installed so 
that standing water in the fixture will not rise in the overflow 
when the stopper is closed, nor shall any water remain in the 
overflow when the fixture is empty. 

P-1206.7.1 Connection of overflows: The overflow from 
any fixture shall discharge into the drainage system on the 
inlet or fixture side of the trap. 

Exception: The overflow from a flush tank serving a water 
closet or urinal shall discharge into the fixture served. 

P-1206.8 Access to concealed connections: Fixtures with con- 
cealed slip-joint connections shall be provided with an access 
panel or utility space or other approved arrangement so as to 
provide access to the slip connections for inspection and repair. 
Where such access cannot be provided, access doors are not 
required provided that all joints are soldered, solvent cemented 
or screwed so as to form a solid connection. 



15" 



-\ 



. 30" 



18" CLEARANCE 



1 



m 



wc T wc 



30" 

«* a» 



E 



WC 

L v J i 



i 



wc 



18" CLEARANCE 



(tub I 



COMPARTMENT 



15" 



— 1 h *: 



30" 30" 



15" 



18" CLEARANCE 



1 



tttt 



( tub I 



wc wc 



18" 



DBL. 
LAV 



Note a. 1 inch = 25.4 mm. 



Figure P-1206.2.1 
FIXTURE CLEARANCES 3 



51 



THE BOCA NATIONAL PLUMBING CODE/1993 



SECTION P-1221.0 WATER CLOSETS 

P- 1221.1 Approval: Water closets shall conform to the water 
consumption requirements of Section P- 1505.9 and shall con- 
form to ANSI Z .124.4 or ASME Al 12.19.2 listed in Chapter 19. 
Water closets shall conform to the hydraulic performance re- 
quirements of ASME Al 12.19.6 listed in Chapter 19. Water 
closet tanks shal I conform to ANSI Z 1 24.4, ASME A 1 12. 1 9.2 or 
ASME A 112.1 9.9 listed in Chapter 1 9. 

P-1221.2 Water closets for public or employee toilet facilities: 

Water closet bowls for public or employee toilet facilities shall 
be of the elongated type with a minimum water surface area of 
8 inches by 7 inches (203 mm by 178 mm). 

P-1221.3 Water closet seats: Water closets shall be equipped 
with seats of smooth, nonabsorbent material. All seats of water 
closets provided for public or employee toilet facilities shall be 
of the hinged open-front type. Integral water closet seats shall be 
of the same material as the fixture. Water closet seats shall be 
sized for the water closet bowl type. 

P-1221.4 Water closet connections: A 4-inch by 3-inch closet 
bend shall be acceptable. Where a 3-inch bend is utilized on 
water closets, a 4-inch by 3-inch flange shall be installed to 
receive the fixture horn. 

SECTION P-1222.0 FLUSHING DEVICES FOR WATER CLOSETS 
AND URINALS 

P-I222.1 Flushing devices required: Each water closet, urinal, 
clinical sink or other plumbing fixture that depends on trap 
siphonage to discharge the fixture contents to the drainage 
system shall be provided with a flushometer valve, flushometer 
tank or a flush tank designed and installed so as to supply water 
in quantity and rate of flow to flush the contents of the fixture, 
cleanse the fixture and refill the fixture trap. 

P-1222.L1 Separate for each fixture: A flushing device 
shall not serve more than one fixture. 

P- 1222.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Antisiphon: A term applied to valves or mechanical devices 
which eliminate siphonage. 

Ball cock: A water supply valve, opened or closed by means of 
a float or similar device, utilized to supply water to a tank. An 
antisiphon ball cock contains an antisiphon device in the form 
of an approved air gap or vacuum breaker which is an integral 
part of the ball cock unit and which is positioned on the 
discharge side of the water supply control valve. 

Flushometer tank: A device integrated within an air ac- 
cumulator vessel which is designed to discharge a predeter- 
mined quantity of water to fixtures for flushing purposes. 

Flushometer valve: A device that discharges a predetermined 
quantity of water to fixtures for flushing purposes and is 
closed by direct water pressure or other mechanical means. 

P-1222.3 Flushometer valves: Flushometer valves shall com- 
ply with ASSE 1037 listed in Chapter 1.9. Vacuum breakers on 
flushometer valves shall conform to the performance require- 
ments of ASSE 1001 listed in Chapter 19. Access shall be 



provided to vacuum breakers. Flushometer valves shall be of the 
water-conservation type and shall not be utilized where the water 
pressure is lower than the minimum required for normal opera- 
tion. When operated, the valve shall automatically complete the 
cycle of operation, opening fully and closing positively under 
the water supply pressure. Each flushometer valve shall be 
provided with a means for regulating the flow through the valve. 

P- 1222.4 Flush tanks: Flush tanks equipped for manual flush- 
ing shall be controlled by a device designed to refill the tank after 
each discharge and to shut off completely the water flow to the 
tank when the tank is filled to operational capacity. The trap seal 
to the fixture shall be automatically refilled after each flushing. 
The water supply to flush tanks equipped for automatic flushing 
shall be controlled with a timing device. 

P- 1222.4.1 Ball cocks: All flush tanks shall be equipped with 
an antisiphon ball cock conforming to ASSE 1002 or CSA 
CAN/CS A-B 1 25 listed in Chapter 1 9. The ball cock backflow 
preventer shall be located at least 1 inch (25 mm) above the 
full opening of the overflow pipe. A sheathed ball cock shall 
be installed in all gravity flush tanks in which the flush valve 
seat is located less than 1 inch (25 mm) above the flood level 
rim of the bowl. 

P-1222.4.2 Overflows in flush tanks: Flush tanks shall be 
provided with overflows discharging to the water closet or 
urinal connected thereto and shall be sized to prevent flooding 
the tank at the maximum rate at which the tanks are supplied 
with water. The opening of the overflow pipe shall be located 
above the flood level rim of the water closet or urinal or above 
a secondary overflow in the flush tank. 

P-1222.5 Flushometer tanks: Flushometer tanks shall comply 
with ASSE 1037 listed in Chapter 19. 

SECTION P-1223.0 WHIRLPOOL BATHTUBS 

P-1223.1 Approval: Whirlpool bathtubs shall comply with 
ASME Al 12.19.7 listed in Chapter 19. 

P-1223.2 Installation: Whirlpool bathtubs shall be installed and 
tested in accordance with the manufacturer's installation instruc- 
tions. The pump shall be located above the weir of the fixture 
trap. Access shall be provided to the pump. 

P-1223.3 Drain: The pump drain shall be sloped to drain the 
water in the volute when the whirlpool bathtub is empty. 

P-1223.4 Suction fittings: Suction fittings for whirlpool bath- 
tubs shall comply with ASME A 1 12.19.8 listed in Chapter 19. 

SECTION P-1224.0 SPECIAL PLUMBING FIXTURES 

P- 1224.1 Water connections: Baptisteries, ornamental and lily 
pools, aquariums, ornamental fountain basins, swimming pools 
and similar constructions, where provided with water supplies, 
shall be protected against backflow in accordance with Section 
P-l 507.0. 

P-1224.2 Approval: Specialties requiring water and waste con- 
nections shall be submitted for approval. 



54 



PLUMBING FIXTURES 



SECTION P-1225.0 FAUCETS AND FIXTURE FITTINGS 

P- 1225.1 Approval: Faucets and fixture fittings shall conform 
to ASME Al 12.18.1 or CSACAN/CSA-B125 listed in Chapter 
19 and shall conform to the water consumption requirements of 
Section P- 1505.9. 

P- 1225.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Faucet: A valve end of a water pipe by means of which water 
can be drawn from or held within the pipe. 

Fixture fitting: Any device to control or guide the flow of water 
into, or convey water from, fixtures. 

P-1225.3 Hose spray: Sink faucets with a flexible hose and 
spray assembly shall conform to ASSE 1025 orCSACAN/CSA- 
B125 listed in Chapter 19. 

P- 1225.4 Hand showers: Hand-held showers shall conform to 
ASSE 1014 or CSA CAN/CSA-B125 listed in Chapter 19. 

P- 1225.5 Installation: Faucets and diverters shall be installed 
so that the flow of hot water from the fitting corresponds to the 
left-hand side of the fixture fitting. 

P-1225.6 Shower valves: Shower valves for all showers shall 
be balanced pressure-mixing valves or thermostatic-mixing 
valves which conform to the requirements of ASSE 1016 listed 
in Chapter 19. Such valves shall be equipped with high-limit 
stops adjusted to a maximum hot water setting of 120 degrees F. 
(49 degrees C). 

Exception: Balanced pressure-mixing valves or thermo- 
static-mixing valves shall not be required for showers where 
the hot water supply for such showers is controlled by an 
approved master thermostatic-mixing valve set to limit the 
hot water temperature to a maximum of 1 20 degrees F. (49 
degrees C). 



55 



CHAPTER 13 



HANGERS AND SUPPORTS 



SECTION P-1301.0 GENERAL 

P-1301.1 Scope: This chapter shall govern the types, materials 
and installation of anchors, hangers and supports for plumbing 
piping. 

P-1301.2 Piping seismic supports: Where earthquake loads are 
applicable in accordance with Sections 1612.1 and 1612.6 of the 
building code listed in Chapter 19, plumbing piping supports 
shall be designed and installed for the seismic forces in accord- 
ance with the building code listed in Chapter 19. 

SECTION P-1302.0 MATERIAL 

P- 1302.1 General: Hangers, anchors and supports shall support 
the piping and the contents of the piping. Hangers and strapping 
material shall be of approved material that will not promote 
galvanic action. 

SECTION P-1 303.0 ATTACHMENT TO BUILDING 

P- 1303.1 General: Hangers and anchors shall be attached to the 
building construction in an approved manner. 

SECTION M304.0 INTERVAL OF SUPPORT 

P- 1304.1 General: Pipe shall be supported in accordance with 
Table P-1 304.1 or MSS SP-69 listed in Chapter 19. 



SECTION P-1305.0 BASE OF STACKS 

P-1305.1 General: Bases of cast-iron stacks shall be supported 
on concrete, brick laid in cement mortar or metal brackets 
attached to the building construction. 

SECTION P-1306.0 ANCHORAGE 

P-1306.1 General: Anchorage shall be provided to restrain 
drainage piping joined with friction couplings, hubless and 
others from axial movement 

P- 1306.2 Location: Restraints shall be provided for drain pipes 
connected with mechanical joints at all changes in direction and 
diameter greater than two pipe sizes for pipe sizes greater than 
4 inches. Braces, blocks, rodding and other suitable methods as 
specified by the coupling manufacturer shall be utilized. 

SECTION P-1307.0 SWAY BRACING 

P- 1307.1 General: Rigid support sway bracing shall be 
provided at changes in direction greater than 45 degrees (0.79 
rad) for pipe sizes 4 inches and larger. 

SECTION P-1308.0 PARALLEL WATER DISTRIBUTION SYSTEMS 

P- 1308.1 Support: Piping bundles for manifold systems shall 
be supported in accordance with Table P-1 304.1. Support at 
changes in direction shall be in accordance with the 
manufacturer's installation instructions. Hot and cold water 
piping shall not be grouped in the same bundle. 



Table P-1304.1 
HANGER SPACING 



Piping material 


Maximum horizontal spacing (feet) c 


Maximum vertical spacing (feet) c 


ABS pipe 


4 


4 


Aluminum tubing 


10 


15 


Brass pipe 


10 


10 


Cast-iron pipe 3 


5 


15 


Copper or copper-alloy pipe 


12 


10 


Copper or copper-alloy tubing ; 1 Winch diameter and smaller 


6 


10 


Copper or copper-alloy tubing, 1 V2-inch diameter and larger 


10 


10 


CPVC pipe or tubing, 1 inch or smaller 


3 


5 b 


CPVC pipe or tubing, 1 V4 inch or larger 


4 


6 b 


Galvanized steel pipe 


12 


15 


Lead pipe 


Continuous 


4 


PB pipe or tubing 


2% (32 inches) 


4 


PVC pipe 


4 


4 



Note a. The maximum horizontal spacing of cast-iron pipe hangers shall be increased to 10 feet where 10-foot lengths of pipe are installed. 
Noteb. Mid-story guide. 
Note c. 1 foot = 304.8 mm. 



57 



CHAPTER 14 



HEALTH CARE PLUMBING 



SECTION P-1401.0 GENERAL 

P-1401.1 Scope: This chapter shall govern those aspects of 
health care plumbing systems which differ from plumbing sys- 
tems in other structures. Health care plumbing systems shall 
conform to the requirements of this chapter and to the other 
requirements of this code. 

P- 1401. 1.1 Occupancies: The provisions of this chapter shall 
apply to the special devices and equipment installed and 
maintained in the following occupancies: nursing homes, 
homes for the aged, orphanages, infirmaries, first aid stations, 
psychiatric facilities, clinics, professional offices of dentists 
and doctors, mortuaries, educational facilities, surgery, den- 
tistry, research and testing laboratories and establishments 
manufacturing pharmaceutical drugs and medicines and other 
structures with similar apparatus and equipment classified as 
plumbing. 

SECTION P-1402.0 DEFINITIONS 

P- 1402.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Aspirator: A fitting or device supplied with water or other fluid 
under positive pressure which passes through an integral 
orifice or constriction, causing a vacuum. Aspirators are also 
referred to as suction apparatus, and are similar in operation 
to an ejector. 

Bedpan steamer or boiler: A fixture utilized for scalding bed- 
pans or urinals by direct application of steam or boiling water. 

Bedpan washer and sterilizer: A fixture designed to wash 
bedpans and to flush the contents into the sanitary drainage 
system. Included are fixtures of this type that provide for 
disinfecting utensils by scalding with steam or hot water. 

Bedpan washer hose: A device supplied with hot and cold water 
and located adjacent to a water closet or clinical sink to be 
utilized for cleansing bedpans. 

Local vent stack: A vertical pipe to which connections are made 
from the fixture side of traps and through which vapor or foul 
air is removed from the fixture or device utilized on bedpan 

washers. 

Sterilizer 

Boiling type: A boiling-type sterilizer is a fixture of a non- 
pressure type, utilized for boiling instruments, utensils or 



other equipment for disinfection. These devices are portable 
or are connected to the plumbing system. 
Instrument: A device for the sterilization of various instru- 
ments. 

Pressure (autoclave): A pressure vessel fixture designed to 
utilize steam under pressure for sterilizing. 
Pressure instrument washer sterilizer: A pressure instru- 
ment washer sterilizer is a pressure vessel fixture designed to 
both wash and sterilize instruments during the operating cycle 
of the fixture. 

Utensil: A device for the sterilization of utensils as utilized 
in health care services. 

Water: A water sterilizer is a device for sterilizing water and 
storing sterile water. 

Sterilizer vent: A separate pipe or stack, indirectly connected to 
the building drainage system at the lower terminal, which 
receives the vapors from nonpressure sterilizers, or the ex- 
haust vapors from pressure sterilizers, and conducts the 
vapors directly to the open air. Also called vapor, steam, 
atmospheric or exhaust vent. 

SECTION P-1403.0 SPECIAL FIXTURES 

P- 1403.1 Approval: All special plumbing fixtures, equipment, 
devices and apparatus shall be of an approved type. 

P-1403.2 Materials: Fixtures designed for therapy, special 
cleansing or disposal of waste materials, combinations of such 
purposes or any other special purpose, shall be of smooth, 
impervious, corrosion-resistant materials and where subjected to 
temperatures in excess of 180 degrees F. (82 degrees C), shall 
be capable of withstanding, without damage, higher tempera- 
tures. 

P-1403.3 Protection: All devices, appurtenances, appliances 
and apparatus intended to serve some special function, such as 
sterilization, distillation, processing, cooling, storage of ice or 
foods, and which connect to either the water supply or drainage 
system, shall be provided with protection against back/low, 
flooding, fouling, contamination of the water supply system and 
stoppage of the drain. 

P- 1403.4 Access: Access shall be provided to concealed piping 
in connection with special fixtures, where such piping contains 
steam traps, valves, relief valves, check valves, vacuum 
breakers, or other similar items that require periodic inspection, 
servicing, maintenance or repair. Access shall be provided to 



59 



THE BOCA NATIONAL PLUMBING CODE/1993 



concealed piping that requires periodic inspection, maintenance 
or repair. 

P- 1403.5 Clinical sink: A clinical sink shall have an integral trap 
in which the upper portion of a visible trap seal provides a water 
surface. The fixture shall be designed so as to permit complete 
removal of the contents by siphonic or blowout action and to 
re seal the trap. A flushing rim shall provide water to cleanse the 
interior surface. The fixture shall have the flushing and cleansing 
characteristics of a water closet. 

P- 1403.6 Prohibited usage of clinical sinks and service sinks: 

A clinical sink serving a soiled utility room shall not be con- 
sidered as a substitute for, nor be utilized as, a service sink. A 
service sink shall not be utilized for the disposal of urine, fecal 
matter or other human waste. 

P-1403.7 Ice prohibited in soiled utility room: Machines for 
manufacturing ice, or any device for the handling or storage of 
ice, shall not be located in a soiled utility room. 

P-1403.8 Sterilizer equipment requirements: The approval 
and installation of all sterilizers shall conform to the require- 
ments of the mechanical code listed in Chapter 19. 

P- 1403.8.1 Sterilizer piping: Access for the purposes of 
inspection and maintenance shall be provided to all sterilizer 
piping and devices necessary for the operation of sterilizers. 

P-1403.8.2 Steam supply: Steam supplies to sterilizers, in- 
cluding those connected by pipes from overhead mains or 
branches, shall be drained to prevent any moisture from 
reaching the sterilizer. The condensate drainage from the 
steam supply shall be discharged by gravity. 

P- 1403.8.3 Steam condensate return: Steam condensate 
returns from sterilizers shall be a gravity return system. 

P- 1403.8.4 Condensers: Pressure sterilizers shall be 
equipped with a means of condensing and cooling the exhaust 
steam vapors. Nonpressure sterilizers shall be equipped with 
a device that will automatically control the vapor, confining 

the vapors within the vessel. 

P-1403.9 Special elevations: Control valves, vacuum outlets 
and devices protruding from a wall of an operating, emergency, 
recovery, examining or delivery room, or in a corridor or other 
location where patients are transported on a wheeled stretcher, 
shall be located at an elevation which prevents bumping the 
patient or stretcher against the device. 

P-1403.10 Plumbing in mental health centers: In mental 
health centers, pipes or traps shall not be exposed, and fixtures 
shall be bolted through walls. 

SECTION P-1404.0 DRAINAGE AND VENTING 

P- 1404.1 Bedpan washers and clinical sinks: Bedpan washers 
and clinical sinks shall connect to the drainage and vent system 
in accordance with the requirements for a water closet. Bedpan 
washers shall also connect to a local vent. 

P-1404.2 Indirect waste: All sterilizers, steamers and con- 
densers shall discharge to the drainage through an indirect waste 
pipe by means of an air gap. Where a battery of not more than 
three sterilizers discharges to an individual receptor, the distance 



between the receptor and a sterilizer shall not exceed 8 feet (2438 
mm). The indirect waste pipe on a bedpan steamer shall be 
trapped. 

P- 1404.3 Vacuum system station: Ready access shall be 
provided to vacuum system station receptacles. Such receptacles 
shall be built into cabinets or recesses and shall be visible. 

P- 1404.4 Bottle system: Vacuum (fluid suction) systems in- 
tended for collecting, removing and disposing of blood, pus or 
other fluids by the bottle system shall be provided with recep- 
tacles equipped with an overflow prevention device at each 
vacuum outlet station. 

P-1404.5 Central disposal system equipment: All central 
vacuum (fluid suction) systems shall provide continuous service. 
Systems equipped with collecting or control tanks shall provide 
for draining and cleaning of the tanks while the system is in 
operation. In hospitals, the system shall be connected to the 
emergency power system. The exhausts from a vacuum pump 
serving a vacuum (fluid suction) system shall discharge separate- 
ly to open air above the roof. 

P-1404.6 Central vacuum or disposal systems: Where the 
waste from a central vacuum (fluid suction) system of the 
barometric-lag, collection-tank or bottle-disposal type is con- 
nected to the drainage system, the waste shall be directly con- 
nected to the sanitary drainage system through a trapped waste. 

P-1404.6.1 Piping: The piping of a central vacuum (fluid 
suction) system shall be of corrosion-resistant material with 
a smooth interior surface. A branch shall not be less than 
'/2-inch nominal pipe size for one outlet and shall be sized in 
accordance with the number of vacuum outlets. A main shall 
not be less than 1 -inch nominal pipe size. The pipe sizing shall 
be increased in accordance with the manufacturer's instruc- 
tions as stations are increased. For the purposes of inspection, 
maintenance and replacement, all piping shall have cleanout 
facilities on mains and branches. Access shall be provided to 
such cleanout facilities. 

P-l 404.6.2 Velocity: The velocity of airflow in a central 
vacuum (fluid suction) system shall be less than 5,000 feet per 
minute (25 m/s). 

P-1404.7 Vent connections prohibited: Connections between 
local vents serving bedpan washers or sterilizer vents serving 
sterilizing apparatus, and normal sanitary plumbing systems are 
prohibited. Only one type of apparatus shall be served by a local 
vent. 

P- 1404.8 Local vents and stacks for bedpan washers: Bedpan 
washers shall be vented to open air above the roof by means of 
one or more local vents. The local vent for a bedpan washer shall 
not be less than a 2-inch diameter pipe. A local vent serving a 
single bedpan washer is permitted to drain to the fixture served. 

P-1404.8.1 Multiple Installations: Where bedpan washers 
are located above each other on more than one floor, a local 
vent stack is permitted to be installed to receive the local vent 
on the various floors. Not more than three bedpan washers 
shall be connected to a 2-inch local vent stack, not more than 
six to a 3-inch local vent stack and not more than 1 2 to a 4-inch 
local vent stack. In multiple installations, the connections 
between a bedpan washer local vent and a local vent stack 



60 



HEALTH CARE PLUMBING 



shall be made with tee or tee-wye sanitary pattern drainage 
fittings installed in an upright position. 

P-1404.8.2 Trap required: The bottom of the local vent 
stack, except where serving only one bedpan washer, shall be 
drained by means of a trapped and vented waste connection 
to the sanitary drainage system. The trap and waste shall be 
the same size as the local vent stack. 

P- 1404.8.3 Trap seal maintenance: A water supply pipe not 
less than Va inch in diameter shall be taken from the flush 
supply of each bedpan washer on the discharge or fixture side 
of the vacuum breaker, shall be trapped to form not less than 
a 3 -inch (76 mm) water seal and shall be connected to the 
local vent stack on each floor. The water supply shall be 
installed so as to provide a supply of water to the local vent 
stack for cleansing and drain trap seal maintenance each time 
a bedpan washer is flushed. 

P- 1404.9 Sterilizer vents and stacks: Multiple installations of 
pressure and nonpressure sterilizers shall have the vent connec- 
tions to the sterilizer vent stack made by means of inverted wye 
fittings. Access shall be provided to vent connections for the 
purpose of inspection and maintenance. 

P- 1404.9.1 Drainage: The connection between sterilizer 
vent or exhaust openings and the sterilizer vent stack shall be 
designed and installed to drain to the funnel or basket- type 
waste fitting. In multiple installations, the sterilizer vent stack 
shall be drained separately to the lowest sterilizer funnel or 
basket-type waste fitting or receptor. 

P-1404.10 Sterilizer vent stack sizes: Sterilizer vent stack sizes 
shall comply with Sections P-1404.10. 1 through P-1404. 10.4. 

P-1404.10. 1 Bedpan steamers: The minimum size of a 
sterilizer vent serving a bedpan steamer shall be \Vi inches 
in diameter. Multiple installations shall be sized in accord- 
ance with Table P-1404. 10.1. 

Table P-1404.10.1 

STACK SIZES FOR BEDPAN STEAMERS AND BOILING-TYPE 

STERILIZERS (NUMBER OF CONNECTIONS OF VARIOUS SIZES 

PERMITTED TO VARIOUS-SIZED STERILIZER VENT STACKS) 



Stack size (inches) 


Connection size 








\W 


2" 


11/ 2 a 


1 


or 


2 a 


2 


or 1 


2 b 


1 


and 1 


3 a 


4 


or 2 


3 b 


2 


and 2 


4 a 


8 


or 4 


4 b 


4 


and 4 



Note a. Total of each size. 
Note b. Combination of sizes. 

P- 1404.10.2 Boiling-type sterilizers: The minimum size of 
a sterilizer vent stack shall be 2 inches in diameter where 
serving a utensil sterilizer, and 1 Vi inches in diameter where 
serving an instrument sterilizer. Combinations of boiling-type 
sterilizer vent connections shall be sized in accordance with 
Table P-1404.10.1. 

P-1404.10.3 Pressure sterilizers: Pressure sterilizer vent 
stacks shall be 2^ inches minimum. Those serving combina- 



tions of pressure sterilizer exhaust connections shall be sized 
in accordance with Table P-1404. 10.3. 

Table P-1404.10.3 

STACK SIZES FOft PRESSURE STERILIZERS 

(NUMBER OF CONNECTIONS OF VARIOUS SIZES PERMITTED TO 

VARIOUS-SIZED VENT STACKS) 



Stack size 


Connection size 


(inches) 


3/4" 


1" 


1 I/4" 


1V&" 


V/f 


3 or 


2 or 


1 




1^ b 


2 and 


1 






2 a 


6 or 


3 or 


2 or 


1 


2 b 


3 and 


2 






2 b 


2 and 


1 and 


1 




2 b 


1 and 


1 and 




1 


3 a 


15 or 


7 or 


5 or 


3 


3 b 




1 and 


2 and 


2 




1 and 


5 and 




1 



Note a. Total of each size. 
Note h. Combination of sizes. 

P-1404.10.4 Pressure instrument washer sterilizer sizes: 

The minimum diameter of a sterilizer vent stack serving an 
instrument washer sterilizer shall be 2 inches. Not more than 
two sterilizers shall be installed on a 2- inch stack, and not 
more than four sterilizers shall be installed on a 3-inch stack. 

SECTION P-1405.0 WATER SUPPLY 

P- 1405.1 Water service: All hospitals shall have two water 
service pipes installed in such a manner so as to provide an 
uninterrupted supply of water in the event of a water main or 
water service pipe failure. 

P-1405.2 Hot water: Hot water shall be provided to supply all 
of the hospital fixture, kitchen and laundry requirements. Special 
fixtures and equipment shall have hot water supplied at a 
temperature specified by the manufacturer. The hot water system 
shall be installed in accordance with Section P- 1508.0. 

P- 1405.3 Vacuum breaker installation: Vacuum breakers shall 
be installed a minimum of 6 inches (152 mm) above the flood 
level rim of the fixture or device in accordance with Section 
P-1507.0. The flood level rim of hose connections shall be the 
maximum height at which any hose is utilized. 

P-1405.4 Prohibited water closet and cBinica! sink supply: Jet- 
or water-supplied orifices, except those supplied by the Hush 
connections, shall not be located in or connected with a water 
closet bowl or clinical sink. This section shall not prohibit an 
approved bidet installation. 

P-1405.5 Special equipment, water supply protection: The 

water supply for hospital fixtures shall be protected against 
backflow in accordance with Table P-1405.5. 

P- 1405.6 Clinical, hydrotherapeutic and radiological equip- 
ment: All clinical, hydrotherapeutic, radiological or any equip- 
ment which is supplied with water or which discharges to the 
waste system, shall conform to the requirements of this section 
and Section P-1507.0. 

P- 1405.7 Condensate drain trap seal: A water supply shall be 
provided for cleaning, flushing and resealing the condensate 
trap, and the trap shall discharge through an air gap in accord- 
ance with Section P-1507.0. 



61 



THE BOCA NATIONAL PLUMBING CODE/1993 



P-1405.8 Valve leakage diverter: Each water sterilizer filled 
with water through directly connected piping shall be equipped 
with an approved leakage diverter or bleed line on the water 
supply control valve to indicate and conduct any leakage of 
un sterile water away from the sterile zone. 



Table P-1405.5 
BACKFLOW PROTECTION FOR FIXTURES 



Fixtures 


Type of protection 3 


Remarks 


Aspirators: 








Laboratory 




Vacuum breaker 




Portable 




Vacuum breaker 




Vacuum system 




Vacuum breaker 




Bedpan: 








Washers 




Vacuum breaker 




Washer hose 




Vacuum breaker 


Locate 5 feet above floor b 


Boiling-type sterilizer 




Air gap 


Not less than twice the effective opening of the 
water supply 


Exhaust condenser 




Vacuum breaker 


Flush floor drain 




Vacuum breaker 




Hose connection in health care and laboratory areas 


Vacuum breaker 


Locate in accordance with Section P-1405.3 and 








not less than 6 feet above finish floor 


Pressure instrument washer sterilizer 


Vacuum breaker 




Pressure sterilizer 




Vacuum breaker 




Vacuum systems: 








Cleaning 




Air gap or vacuum breaker 




Fluid suction 




Air gap or vacuum breaker 





Note a. Where utilized, atmospheric vacuum breakers shall be installed after the last control valve. 
Noteb. Hoot = 304.8 mm. 



62 



CHAPTER 15 



WATER SUPPLY AND DISTRIBUTION 



SECTION P-1501.0 GENERAL 

P- 1501.1 Scope: This chapter shall govern the design and instal- 
lation of water supply systems, both hot and cold, for utilization 
in connection with human occupancy and habitation. 

SECTION P-1502.0 DEFINITIONS 

P- 1502.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Air gap (water distribution system): The unobstructed vertical 
distance through the free atmosphere between the lowest 
opening from any pipe or faucet supplying water to a tank, 
plumbing fixture or other device and the flood level rim of 
the receptacle. 

Fixture supply: The water supply pipe connecting a fixture to a 
branch water supply pipe or directly to a main water supply 
pipe. 

Flow pressure: The pressure in the water supply pipe near the 
faucet or water outlet while the faucet or water outlet is wide 
open and flowing. 

Full-open valve: A shutoff valve that, in the full position, has a 
straight- through flow passageway with a diameter not less 
than one nominal pipe size smaller than the nominal pipe size 
of the connecting pipe. 

Nonpotable water: Water not safe for drinking, personal or 
culinary utilization. 

Potable water: Water free from impurities present in amounts 
sufficient to cause disease or harmful physiological effects 
and conforming in bacteriological and chemical quality to the 
requirements of the Public Health Service Drinking Water 
Standards or the regulations of the public health authority 
having jurisdiction. 

Quick-closing valve: A valve or faucet which closes auto- 
matically when released manually, or which is controlled by 
a mechanical means for fast-action closing. 

Relief valve 

Pressure relief valve: A pressure-actuated valve held closed 
by a spring or other means and designed to relieve pressure 
automatically at the pressure at which such valve is set. 
Temperature and pressure relief (T&P) valve: Acombina- 
tion relief valve designed to function as both a temperature 
relief and pressure relief valve. 



Temperature relief valve: A temperature-actuated valve 
designed to discharge automatically at the temperature at 
which such valve is set. 

Water-hammer arrestor: A device utilized to absorb the pres- 
sure surge (water hammer) that occurs when water flow is 
suddenly stopped in a water supply system. 

Water outlet: A discharge opening through which water is 
supplied to a fixture, into the atmosphere (except into an open 
tank that is part of the water supply system), to a boiler or 
heating system, or to any devices or equipment requiring 
water to operate but which are not part of the plumbing 
system. 

Water pipe 

Riser: A water supply pipe that extends one full story or more 
to convey water to branches or to a group of fixtures. 
Water distribution pipe: A pipe within the structure or on 
the premises which conveys water from the water service pipe 
or meter to the points of utilization. 

Water service pipe: The pipe from the water main or other 
source of potable water supply to the water distribution sys- 
tem of the building served. 

Water supply system: The water service pipe, water distribution 
pipes, and the necessary connecting pipes, fittings, control 
valves and all appurtenances in or adjacent to the structure or 
premises. 

SECTION P-1503.0 WATER REQUIRED 

P- 1503.1 Structures: Every structure equipped with plumbing 
fixtures and utilized for human occupancy or habitation shall be 
provided with a potable supply of cold water in the amounts and 
at the pressures specified in this chapter. For permanent resi- 
dences or structures in which people are employed, hot water 
shall also be provided. 

P-1503.2 Nonpotable water prohibited: Only potable water 
shall be supplied to plumbing fixtures that provide water for 
drinking, bathing or culinary purposes, or for the processing of 
food, medical or pharmaceutical products. 

SECTION P-1504.0 WATER SERVICE 

P- 1504.1 Size of water service pipe: The water service pipe 
shall be sized to supply water to the structure in the quantities 
and at the pressures required in this code. The minimum diameter 
of water service pipe shall be V\ inch. 



63 



THE BOCA NATIONAL PLUMBING CODE/1993 



P-1504.2 Separation of water service and building 
sewer/drain: Water service pipe and the building sewer shall be 
separated by undisturbed or compacted earth. 

The water service pipe shall not be placed in the same trench 
with the building drain and building sewer unless the installation 
conforms to the following requirements: 

1 . The bottom of the water service pipe at all points shall be 
a minimum of 12 inches (305 mm) above the top of the 
highest point of the sewer. 

2, The water service pipe shall be placed on a solid shelf 
excavated at one side of the common trench. 

P-1504.2.1 Water service near sources of pollution: 

Potable water service pipes shall not be located in, under or 
above cesspools, septic tanks, septic tank drainage fields or 
seepage pits (see Section P-403.2 for soil and groundwater 
conditions). Where the water service pipe crosses the sewer, 
the bottom of the water service within 10 feet (3048 mm) of 
the point of crossing shall be at least 12 inches (305 mm) 
above the top of the sewer. 

P-1504.3 Flood hazard: All water service pipes located in a 
flood-hazard zone (A Zone) or a high-hazard zone (V Zone) shall 
be capable of resisting hydrostatic and hydrodynamic loads and 
stresses, including the effects of buoyancy, during the occurrence 
of flooding to the base flood elevation in order to minimize or 
eliminate infiltration of floodwaters into the water supply system. 

SECTION P-1505.0 DESIGN OF BUILDING WATER 
DISTRIBUTION SYSTEM 

P- 1505.1 General: The design of the building's hot and cold 
water distribution system shall conform to approved engineering 
practice. Methods utilized to determine pipe sizes shall be ap- 
proved. At the points of interconnection between the hot and cold 
water supply piping systems and the individual fixtures, appli- 
ances or devices, provisions shall be made to prevent flow 
between such piping systems. 

P-1505.2 Size of fixture supply: The minimum size of a fixture 
supply pipe shall be as shown in Table P-1505.2. The fixture 
supply pipe shall not terminate more than 30 inches (762 mm) 
from the point of connection to the fixture. A reduced-size 
flexible connector installed between the supply pipe and the 
fixture shall be of an approved type. The supply pipe shall extend 
to the floor or wall adjacent to the fixture. 

P- 1505.3 Excessive pressures: Where street main pressure ex- 
ceeds 80 pounds per square inch (psi) (550 kPa), an approved 
pressure-reducing valve shall be installed in the water service 
pipe near the entrance of the water service pipe into the structure. 
Such valve shall reduce the water pressure to 80 psi (550 kPa) 
or less. Water pressure-reducing valves shall conform to ASSE 
.1003 listed in Chapter 19. 

Exception: Where the water service pipe supplies water 
directly to a water pressure booster system, an elevated water 
gravity tank or to pumps provided in connection with a 
hydropneumatic or elevated gravity water supply tank sys- 
tem, the pressure at any fixture shall be limited to not more 
than 80 psi (550 kPa) under no-flow conditions. 



Table P-1505.2 
SV8INJMUM SIZES OF FIXTURE WATER SUPPLY PIPES (INCHES) 



Fixture 


Minimum pipe size (inches) 


Bathtubs 


VS 


Bidet 


3/fc 


Combination sink and tray 


^ 


Dishwasher, domestic 


K 


Drinking fountain 


*A 


Hose bibbs 


ft 


Kitchen sink 


vs 


Laundry, 1 , 2 or 3 compartments 


vs 


Lavatory 


3/fc 


Shower, single head 


vs 


Sinks, flushing rim 


3/ 4 


Sinks, service 


^ 


Urinal, flush tank 


Vfe 


Urinal, flush valve 


3/4 


Wall hydrant 


■1/6 


Water closet, flushometer tank 


% 


Water closet, flush tank 


% 


Water closet, flush valve 


1 


Water closet, one piece 


^ 



P-1505.4 Water hammer: The flow velocity of the water dis- 
tribution system shall be controlled to reduce the possibility of 
water hammer. A water-hammer arrestor shall be installed where 
quick-closing valves are utilized, unless otherwise approved. 
The arrestor shall be located within an effective range of the 
quick-closing valve. Water-hammer arrestors shall conform to 
ASME A 112.26.1 or ASSE 1010 listed in Chapter 19. Access 
shall be provided to water-hammer arrestors. 

P-1505.5 Inadequate water pressure: Wherever water pressure 
from the street main or other source of supply is insufficient to 
provide flow pressures at fixture outlets as required under Sec- 
tion P- 1505 .7, a booster pump and pressure tank, or other ap- 
proved means, shall be installed on the building water supply 
system. 

P-1505.6 Variable street pressures: Where street water main 
pressures fluctuate, the building water distribution system shall 
be designed for the minimum pressure available. 

P- 1505.7 Water distribution system design criteria: The water 
distribution system shall be designed, and pipe sizes shall be 
selected such that under conditions of peak demand, the 
capacities at the fixture supply pipe outlets shall not be less than 
shown in Table P-l 505.7. 

P-1505.8 Parallel water distribution system manifolds: Hot 

water and cold water manifolds installed with parallel connected 
individual distribution lines to each fixture or fixture fitting shall 
be designed in accordance with Sections P-1505.8. 1 through 
P-1505.8.3. 

P-1505.8.1 Manifold sizing: Hot water and cold water 
manifolds shall be sized in accordance with Table P-1505.8. 1. 
The total gallons per minute is the demand of all outlets 
supplied. 

P- 1505.8.2 Valves: Individual fixture shutoff valves installed 
at the manifold shall be identified as to the fixture being 
supplied. 

P-1505.8.3 Access: Access shall be provided to manifolds. 



64 



WATER SUPPLY AND DISTRIBUTION 



Table P-1505.7 

WATER DISTRIBUTION SYSTEM DESIGN CRITERIA 

REQUIRED CAPACITIES AT FIXTURE SUPPLY PIPE OUTLETS 



Table P-1505.9 

MAXIMUM FLOW RATES AND CONSUMPTION FOR PLUMBING 

FIXTURES AND FIXTURE FITTINGS 



Fixture supply outlet serving 


Flow rate ab 

(gpm) 


Flow 
pressure 6 

(psi) 


Bathtub 


4 


8 


Bidet 


2 


4 


Combination fixture 


4 


8 


Dishwasher, residential 


2.75 


8 


Drinking fountain 


0.75 


8 


Laundry tray 


4 


8 


Lavatory 


2 


8 


Shower 


3 


8 


Shower, temperature controlled 


3 


20 


Sillcock, hose bibb 


5 


8 


Sink, residential 


2.5 


8 


Sink, service 


3 


8 


Urinal, valve 


15 


15 


Water closet, blow out, flushometer valve 


35 


25 


Water closet, flushometer tank 


1.6 


8 


Water closet, tank, close coupled 


3 


8 


Water closet, tank, one piece 


6 


20 


Water closet, siphonic, flushometer valve 


25 


15 



Note a. For additional requirements for flow rates and quantities, see Section 
P-1505.9. 
Note b. 1 pound per square inch = 6.894 kPa; 1 gallon per minute = 3.785 l/m. 

Table P-1505.8.1 
MANIFOLD SIZING 



Nominal size internal 
diameter (inches) 


Maximum gallons per minute demand 3 


Velocity at 4 
feet per second 3 


Velocity at 8 
feet per second 3 


■■.■% 
1 

1V& 


2 
6 

10 
15 
22 


5 
11 
20 
31 
44 



Note a. 1 gallon per minute = 3785 l/m; 1 foot per second = 0.305 m/s 

P-1505.9 Maximum flow and water consumption: The maxi- 
mum water consumption flow rates and quantities for all plumb- 
ing fixtures and fixture fittings shall be in accordance with Table 
P-1505.9. Water consumption for water closets listed in the 
following exceptions shall not be greater than 4.0 gallons (15 1) 
per flushing cycle. Water consumption for urinals listed in the 
following exceptions shall not be greater than 1.5 gallons (5.7 1) 
per flushing cycle. 

Exceptions 

1 . Blowout design fixtures. 

2. Penalware. 

3. Clinical sinks. 

4. Service sinks. 

5. Emergency showers. 

6. Water closets provided for the public in occupancies in 
Use Groups A-l , A-2, A-3 and A-5. 

7. Water closets provided for patients and residents in 
occupancies in Use Group 1-2. 

8. Water closets provided for inmates and residents in 
occupancies in Use Group 1-3. 



Plumbing fixture or 
fixture fitting 


Maximum flow rate or quantity 3 


Water closet 


1.6 gallons per flushing cycle 


Urinal 


1.0 gallon per flushing cycle 


Shower head 


2.5 gallons per minute at 80 pounds per 




square inch 


Lavatory, private 


2.2 gallons per minute at 60 pounds per 




square inch 


Lavatory, public 


0.5 gallon per minute at 80 pounds per 




square inch 


Lavatory, public, metering 


0.25 gallons per metering cycle 


or self-closing 




Sink faucet 


2.2 gallons per minute at 60 pounds per 




square inch 



Note a. 1 gallon = 3785 I; 1 gallon per minute = 3785 l/m; 1 pound per square 
inch - 6.895 kPa. 



SECTION P-1506.0 INSTALLATION OF THE BUILDING WATER 
DISTRIBUTION SYSTEM 

P-1506.1 Location of full-open valves: Full-open valves shall 
be installed in the following locations: 

1. On the building water service pipe from the public water 
supply near the curb. 

2. On the water distribution supply pipe at the entrance into 
the structure. 

3. On the discharge side of every water meter. 

4. On the base of every water riser pipe in occupancies other 
than Use Group R-2 which are two stories or less in height 
and in occupancies in Use Group R-3. 

5. On the top of every water down-feed pipe in occupancies 
other than Use Group R-3. 

6. On the entrance to every water supply pipe to a dwelling 
unit, except where supplying a single fixture equipped 
with individual stops. 

7. On the water supply pipe to a gravity or pressurized water 
tank. 

8. On the water supply pipe to every water heater. 

P-1506.2 Location of shutoff valves: Shutoff valves shall be 
installed in the following locations: 

1. On the fixture supply to each plumbing fixture in all 
occupancies other than Use Groups R-2 and R-3, and other 
than in individual guestrooms that are provided with unit 
shutoff valves in occupancies in Use Group R- 1 . 

2. On the water supply pipe to each sillcock. 

3. On the water supply pipe to each appliance or mechanical 
equipment. 

P~l 506.3 Access to valves: Access shall be provided to all 
required full-open valves and shutoff valves. 

P- 1506.3.1 Identification: Service and hose bibb valves shall 
be identified. All other valves installed in locations that are 
not adjacent to the fixture or appliance shall be identified, 
indicating the fixture or appliance served. 



65 



THE BOCA NATIONAL PLUMBING CODE/1993 



P- 1506.4 Water pressure booster systems: Water pressure 
booster systems shall be provided as required by Sections P- 
1.506.4. .1 through P-l 506.4. 11. 

P-1506.4.1 Water pressure booster systems required: 

Where the water pressure in the public water main or in- 
dividual water supply system is insufficient to supply the 
minimum pressures and quantities specified in this code, the 
supply shall be supplemented by an elevated water tank, a 
hydropneumatic pressure booster system or a water pressure 
booster pump installed in accordance with Section P- 
1506.4.5. 

P-l 506.4.2 Support: All water supply tanks shall be supported 
in accordance with the building code listed in Chapter 19. 

P- 1506.4.3 Covers: All water supply tanks shall be covered 
to keep out unauthorized persons, dirt and vermin. The covers 
of gravity tanks shall be vented with a return bend vent pipe 
with an area not less than the area of the down-feed riser pipe, 
and the vent shall be screened with a corrosion-resistant 
screen of not less than 16 x 20 mesh per inch (630 x 787 mesh 
per m). 

P-1506.4.4 Overflows for water supply tanks: Each gravity 
or suction water supply tank shall be provided with an over- 
flow with a diameter not less than that shown in Table 
P-1506.4.4. The overflow outlet shall discharge above and 
within not less than 6 inches (152 mm) of a roof or roof drain, 
floor or floor drain or over an open water- supplied fixture. 
The overflow outlet shall be covered with a corrosion-resist- 
ant screen of not less than 1 6 x 20 mesh per inch (630 x 787 
mesh per m) and by ] /4-inch (6 mm) hardware cloth or shall 
terminate in a horizontal angle seat check valve. Drainage 
from overflow pipes shall be directed so as not to freeze on 
roof walks. 

Table P-1506.4.4 
SIZES FOR OVERFLOW PIPES FOR WATER SUPPLY TANKS 



P-1506.4.7 Tank drain pipes: A valved pipe shall be 
provided at the lowest point of each tank to permit emptying 
of the tank. The tank drain pipe shall discharge as required for 
overflow pipes and shall not be smaller in size than specified 
in Table P-1506.4.7. 



Maximum capacity of water 

supply line to tank 

(gallons per minute) 3 


Diameter of overflow pipe 
(inches) 


0- 50 
50- 150 
150- 200 
200-400 
400- 700 
700-1,000 
Over 1,000 


2 

2V2 

,:■'■■■ ,'■■/:: 3: .'-v.-- 
.;'; 4 . ' : ; 

6 
8 



Note a. 1 gallon per minute = 3785 l/m. 

P-1506.4.5 Low-pressure cutoff required on booster 
pumps: A low-pressure cutoff shall be installed on all booster 
pumps in a water pressure booster system to prevent creation 
of a vacuum or negative pressure on the suction side of the 
pump when a positive pressure of 10 psi (68.94 kPa) or less 
occurs on the suction side of the pump. 

P- 1506.4.6 Potable water inlet control and location: 

Potable water inlets to gravity tanks shall be controlled by a 
ball cock or other automatic supply valve installed so as to 
prevent the tank from overflowing. The inlet shall be ter- 
minated so as to provide an air gap not less than 4 inches (102 
mm) above the overflow. 



Table P-1506.4.7 
SIZE OF DRAIN PIPES FOR WATER TANKS 


Tank capacity (gallons) 3 


Drain pipe (inches) 


Up to 750 

751 to 1,500 

1,501 to 3,000 

3,001 to 5,000 

5,001 to 7,500 

Over 7,500 


1 

V/2 

2 

2V2 

3 
4 



Note a. 1 gallon = 3.785 I. 

P-1506.4.8 Prohibited location of potable supply tanks: 

Potable water gravity tanks or manholes of potable water 
pressure tanks shall not be located directly under any soil or 
waste piping or any source of contamination. 

P- 1506.4.9 Pressure tanks, vacuum relief: All water pres- 
sure tanks shall be provided with a vacuum relief valve at the 
top of the tank which will operate up to a maximum water 
pressure of 200 psi (1380 kPa) and up to a maximum tempera- 
ture of 200 degrees F. (93 degrees C). The minimum size of 
such vacuum relief valve shall be V2 inch. 

P- 1506.4.10 Pressure relief for tanks: Every pressure tank 
in a hydropneumatic pressure booster system shall be 
protected with a pressure relief valve. The pressure relief 
valve shall be set at a maximum pressure equal to the rating 
of the tank. The relief valve shall be installed on the supply 
pipe to the tank or on the tank. The relief valve shall discharge 
by gravity to a safe place of disposal. 

P-1506.4.11 Pumps and other appliances: Water pumps, 
filters, softeners, tanks and all other appliances and devices 
which handle or treat potable water shall be protected against 
contamination. 

SECTION P-1507.0 PROTECTION OF POTABLE WATER SUPPLY 

P-l 507.1 General: A potable water supply system shall be 
designed, installed and maintained in such a manner so as to 
prevent contamination from nonpotabie liquids, solids or gases 
being introduced into the potable water supply through cross 
connections or any other piping connections to the system. 

P-1507.1.1 Stop-and- waste valves prohibited: Combina- 
tion stop-and- waste valves or cocks shall not be installed 
underground. 

P-1507.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Backflow 

Water supply system: The flow of water or other liquids, 
mixtures or substances into the distribution pipes of a potable 
water supply from any source except the intended source. 

Backflow connection: Any arrangement whereby backflow is 
possible. 



66 



WATER SUPPLY AND DISTRIBUTION 



Backflow preventer: A device or means to prevent backflow. 

Contamination: A general term meaning the introduction into 
the potable water supply of chemicals, wastes or sewage 
which renders the water unfit for the intended purpose. 

Critical level (C-L): An elevation (height) reference point that 
determines the height at which a vacuum breaker is installed 
above the flood level rim of the fixture or receptor served by 
the device. The critical level is the elevation level below 
which there is a potential for backflow to occur. 

Cross connection: Any physical connection or arrangement 
between two otherwise separate piping systems, one of which 
contains potable water and the other either water of unknown 
or questionable safety or steam, gas or chemical, whereby 
there exists the possibility for flow from one system to the 
other, with the direction of flow depending on the pressure 
differential between the two systems (see "Backflow"). 

Effective opening: The minimum cross-sectional area at the 
point of water supply discharge, measured or expressed in 
terms of the diameter of a circle or, if the opening is not 
circular, the diameter of a circle of equivalent cross-sectional 
area. For faucets and similar fittings, the effective opening 
shall be measured at the smallest orifice in the fitting body or 
in the supply piping to the fitting. 

Essentially nontoxic transfer fluids: Fluids having a Gosselin 
rating of 1, including: propylene glycol; mineral oil; 
polydimethyoil oxane; hydrochlorofluorocarbon, 
chlorofluorocarbon and hydro fluorocarbon refrigerants; and 
FDA-approved boiler water additives for steam boilers. 

Essentially toxic transfer fluids: Soil, waste or gray water and 

fluids having a Gosselin rating of 2 or more including 
ethylene glycol, hydrocarbon oils, ammonia refrigerants and 
hydrazine. 

Flood level rim: The edge of the receptacle from which water 
overflows. 

Pressure gradient monitor: A device utilized to protect the 
quality of water, fail safe by design, which secures the potable 
water system by isolating the heat exchanger when the posi- 
tive pressure gradient is less than 10 pounds per square inch 
(psi) (70 kPa) of the nonpotable side. 

Reduced pressure principle backflow preventer: A device 

consisting of two independently acting check valves, spring 
loaded to a closed position and separated by an intermediate 
chamber in which there is an automatic relief vented to 
atmosphere, spring loaded to the open position. 

Rim: An unobstructed open edge of a fixture. 

Vacuum breaker: A type of backflow preventer installed on 
openings subject to normal atmospheric pressure. 

P-1507.3 Identification of potable and nonpotable water: In 

all buildings where two or more water distribution systems, one 
potable water and the other nonpotable water, are installed, each 
system shall be identified either by color marking or metal tags 
as required in AS ME A 13.1 listed in Chapter 19. 



P-l 507.4 Cross-connection control: Cross connections are 
prohibited, except where approved protective devices are in- 
stalled. 

P-l 507.4.1 Private water supplies: Cross connections be- 
tween a private water supply and a potable public supply shall 
be prohibited. 

P-1507.5 Chemicals and other substances: Chemicals and 
other substances that produce either toxic conditions, taste, odor 
or discoloration in a potable water system, shall not be intro- 
duced into, or utilized in, such systems. 

P- 1507.6 Painting of water tanks: The interior surface of a 
potable water tank shall not be lined, painted or repaired with 
any material that changes the taste, odor, color or potability of 
the water supply when the tank is placed in, or returned to, 
service. The application of a coating to the interior of a steel tank 
shall conform to AWWA D102 listed in Chapter 19. 

P- 1507.7 Reuse of piping: Piping that has been utilized for any 
purpose other than conveying potable water shall not be utilized 
for conveying potable water. 

P-1507.8 Return water: Water utilized for the cooling of equip- 
ment or other processes shall not be returned to the potable water 
system. Such water shall be discharged into a drainage system 
through an air gap or shall be utilized for nonpotable purposes. 

P-1507.9 Backflow protection: Means of protection against 
backflow shall be provided in accordance with Sections P- 
1507.9.1 through P-1507 .9.8. 

P- 1507.9.1 Air gap: The minimum required air gap shall be 
measured vertically from the lowest end of a potable water 
outlet to the flood level rim of the fixture or receptacle into 
which such potable water outlet discharges. 

P- 1507.9.2 Backflow preventer with intermediate atmos- 
pheric vent: Backflow preventers with intermediate atmos- 
pheric vents shall conform to ASSE 1012 or CSA 
CAN/CSA-B64.3 listed in Chapter 1 9. These devices shall be 
permitted to be installed where subject to continuous pressure 
conditions. The relief opening shall discharge by air gap and 
shall be prevented from being submerged. 

P-1507.9.3 Reduced pressure principle backflow 

preventers: Reduced pressure principle backflow preventers 
shall conform to ASSE 1013, AWWA C511 or CSA 
CAN/CSA-B64.4 listed in Chapter 1 9. These devices shall be 
permitted to be installed where subject to continuous pressure 
conditions. The relief opening shall discharge by air gap and 
shall be prevented from being submerged. 

P-1507.9.4 Atmospheric-type vacuum breakers: Pipe-ap- 
plied atmospheric-type vacuum breakers shall conform to 
ASSE 1001 or CSACAN/CSA-B64. 1. 1 listed in Chapter 19. 
Hose-connection vacuum breakers shall conform to ASSE 
1011, CSA CAN/CSA-B64.2, ASSE 1019, CSA CAN/CSA- 
B64.2.2, ASSE 1035 or CSA CAN/CSA-B64.7 listed in 
Chapter 1.9. These devices shall operate under normal atmos- 
pheric pressure when the critical level is installed at the 
required height. 

P-1507.9.5 Barometric loop: Barometric loops shall precede 
the point of connection and shall extend vertically to a height 



67 



THE BOCA NATIONAL PLUMBING CODE/1993 



of 35 feet (10668 mm). A barometric loop shall only be 
utilized as an atmospheric-type or pressure-type vacuum 
breaker. 

P-1507.9.6 Pressure-type vacuum breakers: Pressure-type 
vacuum breakers shall conform to ASSE 1020 listed in Chap- 
ter 19. These devices are designed for installation under 
continuous-pressure conditions when the critical level is in- 
stalled at the required height. 

P-l 507.9.7 Double check-valve assemblies: Double check- 
valve assemblies shall conform to ASSE 1015 or AWWA 
C510 listed in Chapter 19. Double-detector check- valve as- 
semblies shall conform to ASSE 1048 listed in Chapter 19. 
These devices shall be capable of operating under continuous 
pressure conditions. 

P-1507.10 Location of backflow preventers: Access shall be 
provided to backflow preventers. 

P-l 507. 1.1 inspection of devices: Periodic inspections shall be 
made of all backflow preventers to determine whether they are 
operable. Reduced pressure principle backflow preventers, dou- 
ble check- valve assemblies and double-detector check- valve 
assemblies shall be periodically tested. The periodic testing shall 
be performed in accordance with one of the following standards 
listed in Chapter 19: 

ASSE 5010-1013-1, Sections 1 and 2 

ASSE 501.0-1.015-1, Sections 1 and 2 

ASSE 5010-1015-2 

ASSE 5010-1015-3, Sections 1 and 2 

ASSE 5010-1015-4, Sections 1 and 2 

ASSE 5010-1020-1, Sections 1 and 2 

ASSE 5010-1047-1, Sections 1, 2, 3 and 4 

ASSE 5010-1048-1, Sections 1, 2, 3 and 4 

ASSE 5010-1048-2 

ASSE 5010-1048-3, Sections 1, 2, 3 and 4 

ASSE 5010-1048-4, Sections 1, 2, 3 and 4 



P-l 507. 12 Protection of potable water outlets: All potable 
water openings and outlets shall be protected against backflow, 
in accordance with one of the following Sections P-l 507. 12.1 
through P-l 507. 12.4. 

P-l 507. 12.1 Protection by air gap: Openings and outlets 
shall be protected by an air gap between the opening and the 
fixture flood level rim as specified in Table P-1507.12.1. 
Openings and outlets equipped for hose connection shall be 
protected by means other than an air gap. 

P-1507.12.2 Protection by a backflow preventer with in- 
termediate atmospheric vent: Openings and outlets shall be 
protected by a backflow preventer with an intermediate at- 
mospheric vent. 

P-1507.12.3 Protection by a vacuum breaker: Openings 
and outlets shall be protected by atmospheric-type or pres- 
sure-type vacuum breakers. The critical level of the vacuum 
breaker shall be set a minimum of 6 inches (152 mm) above 
the flood level rim of the fixture or device. Ball cocks shall 
be set in accordance with Section P-l 222.4, 1 . Vacuum break- 
ers shall not be installed under exhaust hoods or similar 
locations which will contain toxic fumes or vapors. Pipe-ap- 
plied vacuum breakers shall be installed not less than 6 inches 
(1 52 mm) above the flood level rim of the fixture, receptor or 
device served. 

P-1507.12.3.1 Hose connections: Sillcocks, hose bibbs, 
wall hydrants and other openings with a hose connection 
shall be protected by an atmospheric-type or pressure-type 
vacuum breaker or a permanently attached hose connec- 
tion vacuum breaker. 

P-1507.12.3.2 Deck-mounted vacuum breakers: Ap- 
proved deck-mounted vacuum breakers shall be installed 
in accordance with the manufacturer's instructions with 
the critical level not less than 1 inch (25 mm) above the 
flood level rim. 



Table P-1507.12.1 
MINIMUM AIR GAPS FOR PLUMBING FIXTURES 



Fixture 


Minimum air gap 


Away from a wall a (inches) b 


Close to a wall (inches) b 


Lavatories and other fixtures with effective opening not 
greater than 1 /> inch in diameter 

Sink, laundry trays, gooseneck back faucets and other 
fixtures with effective openings not greater than 3/4 inch 
in diameter 

Over-rim bath fillers and other fixtures with effective 
openings not greater than 1 inch in diameter 

Drinking water fountains, single orifice not greater than ?/i6 
inch in diameter or multiple orifices with a total area of 
0.150 square inches (area of circle 7 /i6 inch in diameter) 

Effective openings greater than 1 inch 


1 

Wi 

2 

1 . 

Two times the diameter of the 
effective opening 


11/2 

2Vi 
3 

11£ 

Three times the diameter of the 
effective opening 



Note a. Applicable where walls or obstructions are spaced from the nearest inside edge of the spout opening a distance greater than three times the diameter of the 
effective opening for a single wall, or a distance greater than four times the diameter of the effective opening for two intersecting walls. 
Noteb. 1 inch = 25.4 mm. 



68 



WATER SUPPLY AND DISTRIBUTION 



P-l 507.12.4 Protection by a reduced pressure principle 
backflow preventer: Openings and outlets shall be protected 
by a reduced pressure principle backflow preventer. 

P-l 507. 13 Connections to the potable water system: Connec- 
tions to the potable water system shall conform to Sections 
P-1507.13.1 through P-1507.13. 5. 

P-1507.13.1 Connections to boilers: The potable supply to 
the boiler shall be equipped with a backflow preventer with 
an intermediate atmospheric vent. Where conditioning 
chemicals are introduced into the system, the potable water 
connection shall be protected by an air gap or a reduced 
pressure principle backflow preventer. 

P-l 507.13.2 Heat exchangers: Heat exchangers utilizing an 
essentially toxic transfer fluid shall be separated from the 
potable water by double-wall construction. An air gap open 
to the atmosphere shall be provided between the two walls. 
Heat exchangers utilizing an essentially nontoxic transfer 
fluid are permitted to be of single-wall construction. 

Exception: Heat exchangers utilizing an essentially toxic 
transfer fluid with a pressure on the transfer fluid side a 
minimum of 1 psi lower than the pressure on the potable 
water side protected with a pressure gradient monitor are 
permitted to be of single-wall construction. 

P-l 507. 13.3 Connections to automatic fire sprinkler sys- 
tems and standpipe systems: The potable water supply to 
automatic fire sprinkler and standpipe systems shall be pro- 
tected against backflow by a double check-valve assembly or 
a reduced pressure principle backflow preventer. 

Exception: Where systems are installed as a portion of the 
water distribution system in accordance with the require- 
ments of this code and are not provided with a fire depart- 
ment connection, isolation of the water supply system shall 
not be required. 

P-l 507. 13.3.1 Additives or nonpotable source: Where 
systems contain chemical additives or antifreeze, or where 
systems are connected to a nonpotable secondary water 
supply, the potable water supply shall be protected against 
backflow by a reduced pressure principle backflow preven- 
ter. Where chemical additives or antifreeze are added to 
only a portion of an automatic fire sprinkler or standpipe 
system, the reduced pressure principle backflow preventer 
shall be permitted to be located so as to isolate that portion 
of the system. 

P-l 507.13.4 Connections subject to back pressure: Where 
a potable water connection is made to a nonpotable line, 
fixture, tank, vat, pump or other equipment subject to back 
pressure, the potable water connection shall be protected by 
a reduced pressure principle backflow preventer. 

P-l 507. 13.5 Connections to lawn irrigation systems: The 

potable water supply to lawn irrigation systems shall be 
protected against backflow by an atmospheric-type vacuum 
breaker, a pressure-type vacuum breaker or a reduced pressure 
principle backflow preventer. A valve shall not be installed 
downstream from an atmospheric vacuum breaker. Where 
chemicals are introduced into the system, the potable water 



supply shall be protected against backflow by a reduced 
pressure principle backflow preventer. 

P-1507.13.6Beveragedispensers: The water supply connec- 
tion to carbonated beverage dispensers shall be protected 
against backflow by a double check valve with an intermedi- 
ate atmospheric vent conforming to ASSE 1012 listed in 
Chapter 19. The double check valve with an intermediate 
atmospheric vent device and the piping downstream there- 
from shall not be affected by carbon dioxide gas. Secondary 
protection in the form of a dual check valve conforming to 
ASSE 1032 listed in Chapter 19 shall be installed on the 
beverage-dispensing equipment. 

SECTION P-1 508.0 HOT WATER SUPPLY SYSTEM 

P-l 508.1 Where required: In occupied structures, hot water 
shall be supplied to all plumbing fixtures and equipment utilized 
for bathing, washing, culinary purposes, cleansing, laundry or 
building maintenance. 

Exception: In nonresidential occupancies, hot water or tem- 
pered water shall be supplied for bathing and washing pur- 
poses where approved. 

P-l 508.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Hot water: Water at a temperature greater than or equal to 1 10 
degrees F. (43 degrees C). 

Tempered water: Water ranging in temperature from 85 degrees 
F. (29 degrees C.) to 110 degrees F. (43 degrees C). 

Water heater: Any heating appliance or equipment which heats 
potable water and supplies such water to the potable hot water 
distribution system. 

P-l 508.3 Hot water supply piping: Where the developed length 

of hot water piping from the source of hot water supply to the 
farthest fixture exceeds 100 feet (30480 mm), the hot water 
supply system shall be provided with a method of maintaining 
the temperature of hot water to within 100 feet (30480 mm) of 
the fixtures. The methods of maintaining the temperatures shall 
not expend more energy than required by a recirculation system. 

P-1508.3.1 Piping insulation: Piping in required return cir- 
culation systems shall be insulated to provide a thermal resis- 
tance (/?), excluding film resistances, of 



R 



25 



to (hr.) (ft. 2 ) (degrees F.)/Btu 



where t } - t is the design temperature differential between the 
water in the pipe and the surrounding air in degrees Fahren- 
heit. 

Exception: Pipe insulation is not required where tr-t o is 25 
degrees F. (14 degrees C.) or less. 

P-l 508.3.2 Pump operation: Where a circulating pump is 
installed on a return circulation hot water system, the pump 
shall be arranged to shut off automatically or to allow manual 
shut off when the hot water system is not in operation. 



69 



THE BOCA NATIONAL PLUMBING CODE/1993 



P-1508.4 Water heaters: The approval and installation of all 
water heaters shall conform to the requirements of the mechani- 
cal code listed in Chapter 19. 

P-1508.4.1 Minimum size: Water heating systems shall be 
sized to provide hot water to supply both daily requirements 
and hourly peak loads of the occupants of a structure. Storage- 
type water heaters serving individual dwelling units shall be 
sized in accordance with Table P-1508.4.1. 

P- 1508.4.2 Pressure rating: Water heaters utilized for pres- 
sures above atmospheric shall be rated for a minimum work- 
ing pressure of 125 psi (860 kPa). The maximum allowable 
working pressure shall be permanently marked on the water 
heater in a location to which access is provided. 

P-1508.4.3 Drain valves: Drain valves for emptying shall be 
installed at the lowest point of each tank-type water heater 
and hot water storage tank. Drain valves shall conform to 
ASSE 1005 listed in Chapter 19. 

P- 1508.4.4 Hot water from tankless heaters: The tempera- 
ture of water from tankless water heaters shall be tempered 
to 1 40 degrees F. (60 degrees C.) where intended for domestic 
utilization. This provision shall not supersede the requirement 
for protective valves in accordance with Section P- 1225.6. 

P-1508.4.5 Insulation: Un.fi red hot water storage tanks shall 
be insulated so that heat loss is limited to a maximum of 15 
British thermal units per hour (Btuh) per square foot (47 
W/m 2 ) of external tank surface area. For purposes of deter- 
mining this heat loss, the design ambient temperature shall 
not be higher than 65 degrees F. (18 degrees C). 

P- 1508.5 Safety devices: All water heaters shall be protected 
with a temperature relief valve and a pressure relief valve or a 
combination temperature and pressure relief valve. The relief 
valve shall conform to ANSI Z21.22 listed in Chapter 19. All 



relief valves shall have a minimum rated capacity for the equip- 
ment served. Temperature relief valves shall be set at a maximum 
of 210 degrees F. (99 degrees C). Pressure relief valves shall be 
set at a maximum of the pressure rating of the water heater and 
shall not exceed 150 psi (1034 kPa). 

P-1508.5.1 Installation: Safety devices shall be installed in 
the relief valve opening of the water heater, where such 
opening is provided. For tank-type water heaters, the sensing 
element of the temperature relief valve or combination 
temperature and pressure relief valve shall extend into the 
tank and monitor the temperature in the top 6 inches ( 1 52 mm) 
of the tank. Valves shall not be installed between a safety 
device and the water heater. 

P-1508.5.2 Relief valve discharge: Relief valves shall dis- 
charge so as not to be a hazard, a potential cause of damage 
or otherwise a nuisance. 

P- 1508.5.2.1 Material: Relief valve discharge pipe shall 
be rigid pipe approved for water distribution or other pipe 
that is rated as suitable for conveying water that is 210 
degrees F. (99 degrees C.) to an atmospheric discharge. 

P- 1508.5.2.2 Size: The discharge piping shall be the same 
diameter as the relief valve outlet and shall be installed so 
as to drain by gravity flow. 

P-1508.5.2.3 Valves: Valves shall not be installed in the 
relief valve discharge pipe. 

P-1508.5.2.4 Installation: The discharge pipe from a 
relief valve shall terminate atmospherically not more than 
4 inches (102 mm) above the floor. The end of the dis- 
charge pipe shall not be threaded. The discharge pipe from 
a relief valve shall be protected in accordance with Section 
P-309.4. Where a relief valve discharges to a drainage 



Table P-1508.4.1 

mmmum water heater capacities 8,11 



Fuel 


Gas 


Elec. 


Oil 


Gas 


Elec. 


Oil 


Gas 


Elec. 


Oil 


Gas 


Elec. 


Oil 


Number of bedrooms 


1 


2 


3 


— 


1 to 1 V 2 

Baths 


Storage (gallons) 
Input in Btuh (kW) c 
Draw (gph) 
Recovery (gph) 


20 
27K 
43 
23 


20 

(2.5) 

30 

10 


30 
70K 
89 
59 


30 

36K 

60 

30 


30 
14 


30 
70K 
89 
59 


30 
36K 
60 
30 


40 

(45) 

58 

18 


30 
70K 
89 
59 


'■■■,— ■ 


— 


— 


Number of bedrooms 


2 


3 


4 


5 


2 to 2 1 / 2 
Baths 


Storage (gallons) 
Input in Btuh (kW) c 
Draw (gph) 
Recovery (gph) 


30 

36K 

60 

30 


40 

(4.5) 

58 

18 


30 
70K 
89 
59 


40 

36K 

70 

30 


50 

;(5.5) 

: 72 
22 


30 
70K 
89 
59 


40 
38K 
72 
32 


50 

(5.5) 

72 

22 


30 
■70K 
89 
59 


50 
47K 
90 
40 


66 

(5,5) 

88 

22 


30 
70K 
89 
59 


Number of bedrooms 


3 


4 


5 


6 


3 to 3 1 / 2 
Baths 


Storage (gallons) 
Input in Btuh (kW) c 
Draw (gph) 
Recovery (gph) 


40 

38K 

72 

32 J 


50 

(5.5) 

72 

22 


30 
70K 
89 
59 


50 
38K 
82 
32 


66 

(5 oo 5) 
88 

22 


30 
70K 
89 
59 


50 

47K 

90 

40 


66 

(5.5) 

88 

22 


30 
70K 
89 
59 


50 
50K 
92 
42 


80 
(5.5) 
102 

22 


40 
70K 
99 
59 



Note a. Storage capacity, input and the recovery requirements indicated in the table are typical and vary with each individual manufacturer. Any combination of these 
requirements that produce the 1-hour draw stated is permitted. Recovery is based on 100 degree F. water-temperature rise. 
Note h. British thermal units per hour (Btuh); gallons per hour (gph); kilowatts (kW); 1 Btuh = 0.293 W; 1 gallon = 3.785 1; 1 gph = 3.785 l/hr. 
Note c. The symbol K in the table indicates Btuh in thousands. Quantities in parenthesis are in kW. 



70 



WATER SUPPLY AND DISTRIBUTION 



system,, the relief valve discharge shall be by indirect 
connection in accordance with Section P-703.1.2. 

P-1508.5.3 Replacement: When water heaters are replaced, 
the temperature relief valve and the pressure relief valve or 
the combination temperature and pressure relief valve shall 
also be replaced. Such safety devices shall not be reinstalled. 

P-1508.6 Temperature controls: All hot water supply systems 
shall be equipped with automatic temperature controls capable 
of adjustments from the lowest to the highest acceptable 
temperature settings for the intended temperature operating 

range. 

P-1508.6.1 Shutdown: A separate switch shall be provided 
to terminate the energy supplied to electric hot water supply 
systems. A separate valve shall be provided to turn off the 
energy supplied to the main burner of all other types of hot 
water supply systems. 

P- 1508.7 Thermal expansion control: Where a backflow 
prevention device or a check valve is installed in the potable 
water supply of the building, a device for controlling thermal 
expansion shall be installed if the building supply pressure is 
capable of exceeding the temperature and pressure relief valve 
pressure settings. 

Exception; This section shall not apply to potable water 
supply systems served by instantaneous water heaters. 

SECTION P-1509.0 DISINFECTION OF POTABLE WATER SYSTEM 

P- 1509.1 General: New or repaired potable water systems shall 
be purged of deleterious matter and disinfected prior to utiliza- 
tion. The method to be followed shall be that prescribed by the 
health authority having jurisdiction or, in the absence of a 
prescribed method, the procedure described in either AWWA 
C651 or AWWA C652 listed in Chapter 19, or as described in 
this section. This requirement shall apply to "on-site" or "in- 
plant" fabrication of a system or to a modular portion of a system. 

1 . The pipe system shall be flushed with clean, potable water 
until dirty water does not appear at the points of outlet. 

2. The system or part thereof shall be filled with a 
water/chlorine solution containing at least 50 parts per 
million (50 mg/1) of chlorine, and the system or part 
thereof shall be valved off and allowed to stand for 24 
hours; or the system or part thereof shall be filled with a 
water/chlorine solution containing at least 200 parts per 
million (200 mg/1) of chlorine and allowed to stand for 3 
hours. 

3. Following the required standing time, the system shall be 
flushed with clean potable water until the chlorine is 
purged from the system. 

4. The procedure shall be repeated where shown by a bac- 
teriological examination that contamination remains 
present in the system. 



71 



CHAPTER 16 



INDIVIDUAL WATER SUPPLY 



SECTION P-1601.0 GENERAL 

P- 1601.1 Scope: This chapter shall govern the installation of 
individual water supply systems. 

SECTION P-1602.0 DEFINITIONS 

P- 1602.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Cistern: A small covered tank for storing water for a home or 
farm. Generally, this tank stores rainwater to be utilized for 
purposes other than in the potable water supply, and such tank 
is placed underground in most cases. 

Individual water supply: A water supply except an approved 
public water supply that serves one or more families. 

Well 

Bored: A well constructed by boring a hole in the ground with 

an auger, and installing a casing. 

Drilled: A well constructed by making a hole in the ground 

with a drilling machine of any type, and installing casing and 

screen. 

Driven: A well constructed by driving a pipe in the ground. 

The drive pipe is usually fitted with a well point and screen. 

Dug: A well constructed by excavating a large diameter shaft 

and installing a casing. 

SECTION P-1603.0 WHERE REQUIRED 

P-1603.1 General: Where a potable public water supply is not 
available, individual sources of potable water supply shall be 
utilized. 

SECTION P-1 604.0 TYPES OF INDIVIDUAL WATER SUPPLY 

P-1604.1 General: Dependent upon geological and soil condi- 
tions and the amount of rainfall, individual water supplies are of 
the following types: drilled well, driven well, dug well, bored 
well, spring, stream or cistern. Surface bodies of water and land 
cisterns shall not be sources of individual water supply, unless 
properly treated by approved means to prevent contamination. 

SECTION P-1605.0 QUANTITY AND QUALITY OF WATER 

P- 1605.1 Minimum quantity: The combined capacity of the 
source and storage on the system shall supply the fixtures with 
water at rates and pressures as required by Chapter 15. 



P- 1605.2 Water quality: Water from an individual water supply 
shall be certified as potable by the authority having jurisdiction 
prior to connection to the plumbing system. 

P-1605.3 Disinfection of system: After construction or major 
repair, the private potable water supply system shall be purged 
of deleterious matter and disinfected in accordance with Section 
P-1 509.0. 

SECTION P-1605.0 PROTECTION OF SUPPLY 

P- 1606.1 General: An individual water supply shall be located 
and constructed so as to be safeguarded against contamination. 

P- 1606.2 Well locations: A potable ground water source or 
pump suction line shall not be located closer to potential sources 
of contamination than the distances shown in Table P- 1606.2. In 
the event the underlying rock structure is limestone or frag- 
mented shale, the local or state health department shall be 
consulted on well site location. The distances in Table P-1 606.2 
constitute minimum separation and shall be increased in areas of 
creviced rock or limestone, or where the direction of movement 
of the ground water is from sources of contamination toward the 
well. 

Table P-1606.2 

DISTANCE FROM SOURCES OF CONTAMINATION TO 

PRIVATE WATER SUPPLIES AND PUMP SUCTION LINES 



Source of contamination 


Distance (feet) a 


Sewer 


10 


Septic tank 


25 


Subsurface pits 


50 


Pasture 


100 


Subsurface disposal fields 


50 


Seepage pits 


50 


Barnyard 


100 


Farm silo 


25 


Pumphouse floor drain of cast 




iron draining to ground surface 


2 



Note a. 1 foot = 304.8 mm. 

P-1606.3 Elevation: Well sites shall be positively drained and 
shall be at higher elevations than potential sources of contamina- 
tion. 

P- 1606.4 Depth: Private potable well supplies shall not be 
developed from a water table less than 10 feet (3048 mm) below 
the ground surface. 

P- 1606.5 Water-tight casings: Each well shall be provided with 
a water-tight casing to a minimum distance of 1 feet (3048 mm) 



73 



THE BOCA NATIONAL PLUMBING CODE/1993 



below the ground surface. All casings shall extend at least 6 
inches (.152 mm) above the well platform. The casing shall be 
large enough to permit installation of a separate drop pipe. 
Casings shall be sealed at the bottom in an impermeable stratum 
or extend several feet into the water-bearing stratum. 

P-1606.6 Drilled or driven weSfl casings: Drilled or driven well 
casings shall be of steel or other approved material. Where 
drilled wells extend into a rock formation, the well casing shall 
extend to and set firmly in the formation. The annular space 
between the earth and the outside of the casing shall be filled 
with cement grout to a minimum distance of 10 feet (3048 mm) 
below the ground surface. In an instance of casing to rock 
installation, the grout shall extend to the rock surface. 

P- 1606.7 Dug or bored well casings: Dug or bored well casings 
shall be of water-tight concrete, tile, or galvanized or corrugated 
metal pipe to a minimum distance of 10 feet (3048 mm) below 
the ground surface. Where the water table is more than 10 feet 
(3048 mm) below the ground surface, the water-tight casing shall 
extend below the table surface. Well casings for dug wells or 
bored wells constructed with sections of concrete, tile, or gal- 
vanized or corrugated metal pipe shall be surrounded by 6 inches 
(152 mm) of grout poured into the hole between the outside of 
the casing and the ground to a minimum depth of 10 feet (3048 
mm). 

P-1606.8 Cover: Every potable water well shall be equipped 
with an overlapping water-tight cover at the top of the casing 
well or pipe sleeve such that contaminated water or other sub- 
stances are prevented from entering the well through the annular 
opening at the top of the well casing, wall or pipe sleeve. Covers 
shall extend downward at least 2 inches (5 1 mm) over the outside 
of the well casing or wall. A dug well cover shall be provided 
with a pipe sleeve permitting the withdrawal of the pump suction 
pipe, cylinder or jet body without disturbing the cover. Where 
pump sections or discharge pipes enter or leave a well through 
the side of the casing, the circle of contact shall be water tight. 

P-1606.9 Flood hazard: Wells located in a flood-hazard zone 
(A Zone) or a high-hazard zone (V Zone) shall have the top of 
the casing well or pipe sleeve elevated to at least 1 foot (305 mm) 
above the base flood elevation, or shall have sealed covers 
capable of resisting hydrostatic and hydrodynamic loads and 
stresses, including the effects of buoyancy, during the occurrence 
of flooding to the base flood elevation. 

P-1606.10 Drainage: All potable water wells and springs shall 
be constructed such that surface drainage will be diverted away 
from the well or spring. 

SECTION P-1607.0 PUMPING EQUIPMENT 

P- 1607.1 Pump: Pumps shall be constructed and installed so as 
to prevent contamination from entering a potable water supply 
through the pump units. Pumps shall be sealed to the well casing 
or covered with a water-tight seal. Pumps shall be designed to 
maintain a prime and installed such that ready access is provided 
to the pump parts of the entire assembly for repairs. 

P-1607.2 Flood hazard: Pumps located in a flood-hazard zone 
(A Zone) or a high-hazard zone (V Zone), and which are below 
the base flood elevation, shall have seals capable of resisting 
hydrostatic and hydrodynamic loads and stresses, including the 



effects of buoyancy, during the occurrence of flooding to the base 
flood elevation. 

P-1607.3 Pump enclosure: The pump room or enclosure around 
a well pump shall be drained and protected from freezing by 
heating or other approved means. Where pumps are installed in 
basements, such pumps shall be mounted on a block or shelf not 
less than 1 8 inches (457 mm) above the basement floor. Well pits 
shall be prohibited. 



74 



CHAPTER 17 



INSPECTION, TESTS AND MAINTENANCE 



SECTION P-1 701.0 GENERAL 

P-1701.1 Scope: This chapter shall govern the inspections, 
methods of testing and maintenance of plumbing installations. 

SECTION P-1702.0 INSPECTIONS 

P- 1702.1 Required: A plumbing system or part thereof shall not 
be enclosed, covered or put into operation until such system has 
been inspected and approved. During the progress of the plumb- 
ing work, inspection shall be made by the code official as 
required, and the holder of the permit shall be responsible for the 
scheduling of such inspections with the code official at least 24 
hours before such inspection is to be made. 

P- 1702.2 Defective plumbing: An installation of plumbing 
work, whether new or existing, which is found to be defective or 
unsafe shall not be allowed to continue in service. The code 
official shall revoke all permits and certificates in effect, and the 
utilization of such a defective or unsafe plumbing system shall 
be discontinued until such time that the system is brought into 
compliance with this code. 

P- 1702.3 Rough -in inspection: Plumbing work shall not be 
closed in, concealed or covered until the work has been inspected 
and approved and permission is granted to close in, conceal or 
cover the work. Rough-in inspection shall be performed after the 
plumbing system is roughed in and before fixtures are set. Tests 
shall be performed in accordance with Section P-1 703.0. 

P-1702.4 Final inspection: Upon completion of the plumbing 
work and before final approval is given, the code official shall 
inspect the work and observe the final test to ensure compliance 
with this code. 

P- 1702.5 Reinspections: Where any work or installation does 
not pass any initial test or inspection, the necessary corrections 
shall be made to comply with this code. The work or installation 
shall then be resubmitted to the code official for inspection. 

SECTION P-1703.0 TESTING OF PLUMBING SYSTEMS 

P-1703.1 New, altered, extended or repaired systems: Tests 
herein required shall be made by the permit holder and observed 
by the code official. New plumbing systems and parts of existing 
systems, which have been altered, extended or repaired, shall be 
tested as prescribed herein to disclose leaks and defects, except 
that testing is not required in the following cases: 



1. In any case which does not include addition to, replace- 
ment, alteration or relocation of any water supply, drainage 
or vent piping. 

2. In any case where plumbing equipment is set up temporari- 
ly for exhibition purposes. 

P- 1703.2 Defective plumbing: Where there is reason to believe 
that the plumbing system of any structure is defective, the system 
shall be subjected to tests or inspection and all defects shall be 
corrected. 

P-1703.3 Exposure of work: All new, altered, extended or 
replaced plumbing shall be left uncovered and unconcealed until 
such plumbing has been tested and approved. Plumbing work 
that has been covered or concealed before testing and approval 
shall be uncovered for testing. 

P-1703.4 Equipment, material and labor for tests: All equip- 
ment, material and labor required for testing a plumbing system 
or part thereof shall be furnished by the plumbing contractor 
responsible for installing the work. 

P- 1703.5 Drainage and vent systems test: Drainage and vent 
system test methods shall conform to the requirements of Sec- 
tions P-1 703. 5.1 andP-1703.5.2. 

P-1703,5.1 Rough plumbing: Except for outside leaders and 
perforated or open-jointed drain tile, the piping of plumbing 
drainage and venting systems shall be tested upon completion 
of the rough piping installation by water or air and proved 
water tight. Where required by the code official, the cleanout 
plugs shall be removed to determine if the pressure has 
reached all parts of the system. Tests shall be performed by 
either of the following methods: 

1. Water test: The water test shall be applied to the 

drainage system either in its entirety or in sections after 

rough piping has been installed. 

1.1. Where applied to the entire system, all openings in 
the piping shall be closed, except the highest open- 
ing, and the system shall be filled with water to the 
point of overflow. 

1.2. Where the system is tested in sections, each open- 
ing shall be plugged, except the highest opening of 
the section under test, and each section shall be 
filled with water. A section shall not be tested with 
less than a 10-foot (3048 mm) head of water. 

1.3. In testing successive sections, at least the upper 10 
feet (3048 mm) of the next preceding section shall 
be tested such that a joint or pipe in the building, 



75 



THE BOCA NATIONAL PLUMBING CODE/1993 



except the uppermost 10 feet (3048 mm) of the 
system, shall not have been subjected to a test of 
less than a 1 0-foot (3048 mm) head of water. 
1.4. The water shall be kept in the system or in the 
portion under test for a minimum of 15 minutes 
before inspection starts. The system shall then be 
tight at all points. 
2. Air test: The air test shall be made by attaching an air 
compressor testing apparatus to an opening and, after 
closing all other inlets and outlets to the system, forcing 
air into the system until there is a gauge pressure of 5 
pounds per square inch (34 kPa) or a pressure not less 
than a 10-inch (254 mm) column of mercury. This 
pressure shall be held without introduction of addition- 
al air for a minimum period of 15 minutes. 

P-1703.5.2 Finished plumbing: Where required by the code 
official, after the plumbing fixtures have been set and the 
plumbing fixture traps filled with water, the plumbing fixture 
connections shall be tested and proved gas and water tight by 
one of the following test methods: 

1. Final test for gas and water tightness: The final test for 
gas and watertightness of the completed drainage and 
vent system, shall be made by a smoke test or other 
approved method. The test shall be made by filling all 
traps with water and then introducing into the system 
smoke produced by one or more smoke machines. 
When the smoke appears at stack openings on the roof, 
the stack openings shall be closed and a pressure 
equivalent to a 1-inch (249 P) water column shall be 
introduced and maintained for the period of the inspec- 
tion. 

2. After the plumbing fixtures have been set and the traps 
filled with water, the fixture connections shall be tested 
and proven gas and water tight The vent terminals and 
the building drain where the drain leaves the building 
shall be plugged and air shall be introduced into the 
system equal to the pressure of a 1-inch (249 P) water 
column. This shall be accomplished by inserting a "U" 
tube or manometer into the trap of a water closet Such 
pressure shall remain constant for the period of inspec- 
tion without the introduction of additional air. 

P-1703.6 Building sewer test: The building sewer shall be 
tested by insertion of a test plug at the point of connection with 
the public sewer or individual sewage disposal system. The 
building sewer shall then be filled with water under a head of not 
less than 10 feet (3048 mm). The water level at the top of the test 
head of water shall not drop for at least 15 minutes. 

P- 1703.7 Water supply system test: Upon completion of a 
section of or the entire water supply system, the system, or 
portion completed, shall be tested and proved tight under a water 
pressure not less than the working pressure of the system. The 
water utilized for tests shall be obtained from a potable source 
of supply. 

SECTION P-1704.0 MAINTENANCE 

P- 1704.1 General: All plumbing and drainage systems, both 
existing and new and all parts thereof, shall be maintained in a 
safe and sanitary condition. All devices and safeguards required 



by this code shall be maintained in working order. The owner, or 
designated agent, shall be responsible for the maintenance of 
plumbing systems. 



76 



CHAPTER 18 



ALTERNATIVE ENGINEERED DESIGN 



SECTION P-1 801.0 GENERAL 

P- 1801.1 Scope: This chapter shall govern the design, installa- 
tion, inspection and supervision of an alternative engineered 
design plumbing system, including the requirement that con- 
struction documents be submitted and approved. 

SECTION P-1802.0 DEFINITIONS 

P- 1802.1 General: The following words and terms shall, for the 
purposes of this chapter and as stated elsewhere in this code, have 
the meanings shown herein. 

Alternative engineered design: A plumbing system that per- 
forms in accordance with the intent of Chapters 3 through 16 
and provides an equivalent level of performance for the 
protection of public health, safety and welfare. The system 
design is not specifically regulated by Chapters 3 through 16. 

SECTION P-1 803.0 DESIGN CRITERIA 

P- 1803.1 General: An alternative engineered design shall con- 
form to the intent of the provisions of this code and shall provide 
an equivalent level of quality, strength, effectiveness, fireresist- 
ance, durability and safety. Material, equipment or components 
shall be designed and installed in accordance with the 
manufacturer's installation instructions. 

P- 1803.2 Technical data: The registered design professional 

shall submit sufficient technical data to substantiate the proposed 
alternative engineered design and to prove that the performance 
meets the intent of this code. 

SECTION P-1 804.0 SUBMITTAL 

P-1804.1 Application: The registered design professional shall 
indicate on the permit application that the plumbing system is an 
alternative engineered design that conforms to Chapter 18. The 
permit and permanent permit records shall indicate that an 
alternative engineered design was part of the approved installa- 
tion. 

P- 1804.2 Construction documents: The registered design 
professional shall submit to the code official two complete sets 
of signed and sealed construction documents for the alternative 
engineered design. The construction documents shall include 
floor plans and a riser diagram of the work. Where appropriate, 
the construction documents shall indicate the direction of flow, 
all pipe sizes, grade of horizontal piping, loading and location of 
fixtures and appliances. 



SECTION P-1805.0 DESIGN APPROVAL 

P-1805.1 General: Where the code official determines that the 
alternative engineered design conforms to the intent of this code, 
the plumbing system shall be approved. If the alternative en- 
gineered design is not approved, the code official shall notify the 
registered design professional in writing, stating the reasons 
therefor. 

P-1805.2 Inspection and test: The alternative engineered 

design shall be tested and inspected in accordance with the 
requirements of Chapter 17. 

SECTION P-1 806.0 SPECIAL INSPECTION 

P-1806.1 Periodic inspection: The registered design profes- 
sional or designated inspector shall periodically inspect and 
observe the alternative engineered design to determine that the 
installation is in accordance with the approved plans. All dis- 
crepancies shall be brought to the immediate attention of the 
plumbing contractor for correction. Records shall be kept of all 
inspections. 

P- 1806.2 Written report: The registered design professional 

shall submit a final report in writing to the code official upon 
completion of the installation, certifying that the alternative 
engineered design conforms to the approved construction docu- 
ments. A notice of approval for the plumbing system shall not be 
issued until a written certification has been submitted. 

SECTION P-1807.0 ENGINEERED VENT SYSTEM 

P-1807.1 Individual branch fixture and individual fixture 
header vents: The maximum developed length of individual 
fixture vents to vent branches and vent headers shall be deter- 
mined in accordance with Table P- 1 807. 1 for the minimum pipe 
diameters at the indicated vent airflow rates. 

The individual vent airflow rate shall be determined in accord- 
ance with the following: 



where: 



g 



h,b 



N, 



h,h 



Qh,b = N n ,bQv 



= Vent branch or vent header airflow rate 

(cubic feet per minute). 
= Total vent stack airflow rate (cubic feet per minute). 
= Number of fixtures per header (or vent branch), 

total number of fixtures connected to vent stack. 



77 



THE BOCA NATIONAL PLUMBING CODE/1993 



Q v (gP m ) 
e,(cfm) 

where: 

D 

r 



Q w 



27.8^(l-r.)D^ 
0.l34e v (gpm) 



Drainage stack diameter (inches). 
Waste water flow area to total area. 

& 
27.8 D x/3 
Design discharge load (gallons per minute). 



Individual vent airflow rates are obtained by equally distribut- 
ing Q hh into one-half the total number of fixtures on the branch 
or header for more than two fixtures; for an odd number of total 
fixtures, decrease by one; for one fixture, apply the full value of 

Individual vent developed length shall be increased by 20 
percent of the distance from the vent stack to the fixture vent 
connection on the vent branch or header. 



SECTION P-1808.0 AIR ADMITTANCE VALVES 

P- 1808.1 Approval: Individual- and branch-type air admittance 
valves shall conform to ASSE 1051 listed in Chapter 19. The 
valves shall be installed in accordance with the requirements of 
this section and the manufacturer's installation instructions. 

P-1808.2 Definitions: The following words and terms shall, for 
the purposes of this section and as stated elsewhere in this code, 
have the meanings shown herein. 

Air admittance valve: A one-way valve designed to allow air 
to enter the plumbing drainage system when negative pres- 
sures develop in the piping system. The device shall close by 
gravity and seal the vent terminal when the internal pressure 
is equal to or greater than atmospheric pressure. An air 
admittance valve is designed to act as a substitute for vent 
piping extending to the open air. 

P- 1808.3 Where permitted: Individual, branch and circuit 
vents shall be permitted to terminate with a connection to an air 
admittance valve. The air admittance valve shall only vent 
fi xtures that are on the same floor level and connect to a horizon- 
tal branch drain. The horizontal branch drain shall conform to 
Section P- 1808.3.1 or P- 1808.3.2. 



P- 1808.3.1 Location of branch: The horizontal branch 

drain shall connect to the drainage stack or building drain a 
maximum of four branch intervals from the top of the stack. 

P-1808.3.2 Relief vent: The horizontal branch shall be 
provided with a relief vent which shall connect to a vent stack, 
or stack vent, or extend outdoors to the open air. The relief 
vent shall connect to the horizontal branch drain between the 
stack or building drain and the most downstream//xtar<? drain 
connected to the horizontal branch drain. The relief vent shall 
be sized and installed in accordance with Sections P-904.1 
and P-907.0. 

P-1808.4 Location: The air admittance valve shall be located a 
minimum of 4 inches (102 mm) above the horizontal branch 
drain ox fixture drain being vented. The air admittance valve 
shall be located within the maximum developed length permitted 
for the vent. The air admittance valve shall be installed a mini- 
mum of 6 inches (152 mm) above insulation materials. 

P-1808.5 Access and ventilation: Access shall be provided to 
all air admittance valves. The valve shall be located within a 
ventilated space that allows air to enter the valve. 

P- 1808.6 Size: The air admittance valve shall be rated for the 
size of the vent to which the valve is connected. 

P- 1808.7 Vent required: Within each plumbing system, a min- 
imum of one stack vent or vent stack shall extend outdoors to the 
open air. 

P-1808.8 Prohibited installations: Air admittance valves shall 
not be installed in nonneutralized special waste systems as 
described in Chapter 7. Valves shall not be located in spaces 
utilized as supply or return air plenums. 

SECTION P-1809.0 COMPUTERIZED DRAINAGE DESIGN 

P-1809.1 Design of drainage system: The sizing requirements 
for plumbing drainage systems shall be determined by approved 
computer program design methods. 

P-1809.2 Load on drainage system: The load shall be com- 
puted from the simultaneous or sequential discharge conditions 
from fixtures, appurtenances and appliances or the peak usage 
design condition. 

P-1809.2.1 Fixture discharge profiles: The discharge 
profiles for flow rates versus time from fixtures and appli- 



Table P-1807.1 

R/HNSfVSUfrl DIAMETER AND WfAXSB/lUtVl LENGTH OF INDIVIDUAL BRANCH FIXTURE VENTS AND 

INDIVIDUAL FIXTURE HEADER VENTS FOR SMOOTH PIPES 



Diameter 


Individual vent airflow rate (cubic feet per minute) 3 


of 
vent pipe 
(inches) 


Maximum developed length of vent (feet) 3 


1 


2 


3 


4 


5 


6 


7 


8 


9 


10 


11 


12 


13 


14 


15 


16 


17 


18 


19 


20 


3 /2 


95 
100 


25 
88 


13 

47 

100 


8 

30 
94 


5 
20 

65 ■:■ 


4 
15 
48 


3 

10 
37 


2 
9 

29 
100 


1 
7 

24 
87 


1 
6 


1 
5 


1 
4 

14 

53 

100 


1 

3 

12 

46 

96 


1 

3 

11 

40 

84 


1 
3 

36 
75 


1 

2 

i" 8 

32 

67 


1 

2 

7 

29 

60 


1 
2 

26; 
54 


1 
2 

23 

49 


1 
1 


1 

■1]/« 

1 1 /2 

2 


20 
73 


17 
62 


6 

21 

45 

100 



Note a. 1 cubic foot per minute = 0.0004719 rrrvs; 1 foot = 304.8 mm. 



78 



ALTERNATIVE ENGINEERED DESIGN 



ances shall be in accordance with the manufacturer *s specifi- 
cations. 

P-1809.3 Selections of drainage pipe sizes: Pipe shall be sized 
to prevent full-bore flow. 

F-1809.3.1 Selecting pipe wall roughness: Pipe size calcu- 
lations shall be conducted with the pipe wall roughness factor 
(k s ), in accordance with the manufacturer's specifications and 
as modified for aging roughness factors related to pipe wall 
deposits and corrosion. 

P-1809.3.2 Slope of horizontal drainage piping: Horizontal 
drainage piping shall be designed and installed at slopes in 
accordance with Table P-604.1 . 



79 



CHAPTER 19 



REFERENCED STANDARDS 



This chapter lists the standards that are referenced in various 
sections of this document. The standards are listed herein by the 
promulgating agency of the standard, the standard identification, 



the effective date and title, and the section or sections of this 
document that reference the standard. The application of the 
referenced standards shall be as specified in Section P-102.5. 



N^^ American National Standards Institute 

CI ll West 42nd Street 
Wl New York, NY 1 0036 

Standard Referenced 

reference Title in code 

number Section number 

Z4.3 - 87 Minimum Requirements for Nonsewered Waste-Disposal 

Systems P-312.1 

Z21.22- 86 Relief Valves and Automatic Gas Shutoff Devices for Hot 

Water Supply Systems P- 1508.5 

Z124.1 - 87 Plastic Bathtub Units P-1208.1 

Z124.2 - 87 Plastic Shower Receptors and Shower Stalls P-121 8.1 

Z124.3 - 86 Plastic Lavatories P-1217.2 

Z124.4 - 86 Plastic Water Closet Bowls and Tanks P-1221.1 

Z124.6-90 Plastic Sinks P-1219.1 



ARI 



Air-Conditioning & Refrigeration Institute 
1501 Wilson Blvd. 
Arlington, VA 22209 



Standard 
reference 
number 



Title 



Referenced 

in code 

Section number 



1010 - 84 Drinking Fountains and Self-Contained, 

Mechanically-Refrigerated Drinking-Water Coolers ... P-121 1.1 



A ^^ American Society of Mechanical Engineers 

O mm E 345 East 47th Street 
W I VI Cii New York, NY 10017 

Standard 
reference 
number 

A 13. 1 - 8 1 Scheme for the Identification of Piping Systems 

— with 1985 Revision P-1507.3 

Al 12.6. 1 - 88 Supports for Off-the-Floor Plumbing Fixtures for 

Public Use P-1206.5 

Al 12.14. 1 -75 Backwater Valves P- 1005.1 

Al 12.18. 1 -89 Finished and Rough Brass Plumbing Fixture 

Fittings P-407.3 

P-1225.1 

Al 12.19. 1 - 87 Enameled Cast Iron Plumbing Fixtures P-1208.1 

P-1211.1, P-1216.1, P-1217.1, 
P-1219.1 



Standard 




Referenced 


reference 


Title 


in code 


number 




Section number 



A112.19.2-90 



A112.19.3-87 



A112.19.4-84 



A112.19.5-79 
A112.19.6~90 



A1I2.19.7-87 
A112.19.8-87 



A112.19.9-91 

Al 12.21.1 -91 

A112.21.2-91 
All 2.26. 1-84 
B 1.20. 1-83 

B16.3-85 
B 16.4 -85 
B 16.9 -86 

B16.ll -91 

B16.12-91 
B16.15-85 
B16.18-84 

B16.22-89 

B16.23-84 

B16.26-88 

B 16.28 -86 

B 16.29 -86 

B 16.32 -84 



ASME (cont'd.) 

Vitreous China Plumbing Fixtures P- 1209.1 

P-1211.1, P-121 7.1, P-1219.1, P-1220.1, 
P-1221.1 
Stainless Steel Plumbing Fixtures (Designed for 

Residential Use) P-1216.1 

P-1217.1, P-1219.1 
Porcelain Enameled Formed Steel Plumbing 

Fixtures P-1208.1 

P-1217.1, P-1219.1 
Trim for Water-Closet Bowls, Tanks, and Urinals . . . P-407.9 
Hydraulic Requirements for Water Closets and 

Urinals P- 1220.1 

P-1221.1 

Whirlpool Bathtub Appliances P- 1 223. 1 

Suction Fittings for Use in Swimming Pools, 

Wading Pools, Spas, Hot Tubs, and Whirlpool 

Bathtub Appliances P- 1223.4 

Non-Vitreous Ceramic Plumbing Fixtures P-1208.1 

P-1209.1, P-1211.1, P-1216.1, P-1217.1, 
P-1218.1, P-1219.1, P-1221.1 

Floor Drains P-1213.1 

Roof Drains P-405.5 

Water Hammer Arrestors P- 1505.4 

Pipe Threads, General Purpose (inch) P-503.4 

P-506.4, P-509.5, P-5 1 1.4, P-5 12.2, P-5 16.4 

Malleable Iron Threaded Fittings Table P-406.1 

Cast Iron Threaded Fittings Table P-406. 1 

Factorv-Made Wrought Steel Buttwclding 

Fittings Table P-406.1 

Forged Steel Fittings, Socket- Welding and 

Threaded Table P-406. 1 

Cast-Iron Threaded Drainage Fillings Table P-406. 1 

Cast Bronze Threaded Fittings Table P-406. 1 

Cast Copper Alloy Solder Joint Pressure 

Fittings Table P-406. 1 

Wrought Copper and Copper Alloy Solder Joint 

Pressure Fittings Table P-406. 1 

Cast Copper Alloy Solder Joint Drainage Fittings 

(DWV) Table P-406. 1 

Cast Copper Alloy Fittings for Flared Copper 

Tubes Table P-406.1 

Wrought Steel Butt welding Short Radius Elbows and 

Returns Table P-406.1 

Wrought Copper and Wrought Copper Alloy 

Solder Joint Fittings for Sovent Drainage 

Systems Table P-406.1 

Cast Copper Alloy Solder Joint Fittings for Sovent 

Drainage Systems Table P-406. 1 



81 



THE BOCA NATIONAL PLUMBING CODE/1993 



ASSE 



American Society of Sanitary Engineering 

P.O. Box 40362 

Bay Village, OH 44140 



Standard 
reference 
number 



Referenced 

Title in code 

Section number 

Performance Requirements for Pipe Applied Atmospheric 

Type Vacuum Breakers — with 1988 Revision P- 1222,3 

P- 1507.9.4 
Performance Requirements for Water Closet Flush Tank Ball 

Cocks — with 1986 Revision P-l 222.4.1 

Performance Requirements for Water Pressure Reducing 

Valves P- 1505.3 

Performance Requirements for Commercial Dishwashing 

Machines P-l 210.1 

Performance Requirements for Water Heater Drain Valves 

— with 1986 Revision P-l 508.4.3 

Performance Requirements for Residential Use (Household) 

Dishwashers P-1210.1 

Performance Requirements for Home Laundry Equipment 

— with 1986 Revision P-1207.1 

Performance Requirements for Household Food Waste 

Disposer Units — with 1986 Revision P-1214.1 

Performance Requirements for Commercial Food Waste 

Disposer Units P-1214.1 

Performance Requirements for Water Hammer Arresters 

— with 1982 Revision P-l 505.4 

Performance Requirements for Hose Connection Vacuum 

Breakers P-l 507.9.4 

Performance Requirements for Backflow Preventers with 

Intermediate Atmospheric Vent P-l 507.9.2 

P-1507.9.7 
Performance Requirements for Reduced Pressure Principle 

Backflow Preventers — with 1988 Revision P-I507.9.3 

Performance Requirements for Hand-Held Showers 

— with 1989 Revision P-l 225.4 

Performance Requirements for Double Check Backflow 

Prevention Assembly P-1507.9.8 

Performance Requirements for Individual Thermostatic, 

Pressure Balancing and Combination Control Valves 

for Bathing Facilities — with 1988 Revision P-1225.6 

Performance Requirements for Trap Seal Primer Valves; 

Water Supply Fed — with 1986 Revision P- 1003.5 

Performance Requirements for Wall Hydrants, Frost Proof 

Automatic Draining, Ant i -Back flow Types P-l 507.9.4 

Performance Requirements for Pressure Vacuum Breaker 

Assembly (Recommended for Outdoor Usage) 

— with 1989 Revision P-l 507.9.6 

Performance Requirements for Diverters for Plumbing 

Faucets with Hose Spray, Anti -Siphon Type, 

Residential Applications P-l 225.3 

Performance Requirements for Dual Check Valve Type 

Backflow Preventers; For Carbonated Beverage 

Dispensers — Post Mix-Types P-1507.9.7 

Performance Requirements for Laboratory Faucet Vacuum 

Breakers P-l 507.9.4 

Performance Requirements for Pressurized Flushing Devices 

(Flushometers) for Plumbing 

Fixtures P-1222.3 

P-l 222.5 
Performance Requirements for Trap Seal Primer Valves; 

Drainage Type P-1003.5 

Performance Requirements for Double Check Detector 

Assembly Backflow Preventer P-1507.9.8 

Performance Requirements for Air Admittance Valves 

for Plumbing Drainage Systems, Fixture and Branch 

Devices — with September 1992 Revisions P-l 808.1 



1001 -82 

1002-86 
1003-82 
1004-67 
1005-86 
1006-86 
1007-86 
1008-86 
1009-70 
1010-82 
1011 -82 
1012-78 

1013-71 
1014-79 
1015-88 
1016-79 

1018-86 
1019-78 
1020-82 

1025-78 

1032-80 

1035-84 
1037-86 

1044-86 
1048-89 
1051 -90 



5010-1013-1- 

5010-1015-1- 
5010-1015-2- 

5010-1015-3- 

5010-1015-4- 

5010-1020-1- 
5010-1047-1- 

5010-1048-1- 
5010-1048-2- 

5010-1048-3- 

5010-1048-4- 



ASSE (cont'd) 

91 Field Test Procedure for a Reduced Pressure 

Principle Assembly Using a Differential 

Pressure Gauge — with August 1992 

Revisions P-l 507.1 1 

91 Field Test Procedure for a Double Check Valve 

Assembly Using a Duplex Gauge — with 

August 1992 Revisions P-l 507. 1.1 

91 Field Test Procedure for a Double Check Valve 

Assembly Using a Differential Pressure 

Gauge — High- and Low-Pressure Hose 

Method — with August 1992 Revisions P-1507.11 

91 Field Test Procedure for a Double Check Valve 

Assembly Using a Differential Pressure 

Gauge — High Pressure Hose Method 

— with August 1992 Revisions P-J 507. 11 

91 Field Test Procedure for a Double Check Valve 

Assembly Using a Sight Tube 

— with August 1992 Revisions P-1507.11 

91 Field Test Procedure for a Pressure Vacuum 

Breaker Assembly P- 1.507.1 1 

91 Field Test Procedure for a Reduced Pressure 

Detector Assembly Using a Differential 

Pressure Gauge — with August 1992 

Revisions P-1507.11 

91 Field Test Procedure for a Double Check 

Detector Assembly Using a Duplex Gauge 

— with August 1992 Revisions P-l 507.1 1 

91 Field Test Procedure for a Double Check 

Detector Assembly Using a Differential 

Pressure Gauge — High- and Low-Pressure 

Hose Method — with August 1992 Revisions . P- 1507.1 1 
91 Field Test Procedure for a Double Check 

Detector Assembly Using a Differential 

Pressure Gauge — High-Pressure Hose 

Method — with August 1992 Revisions P-J 507.1 1 

91 Field Test Procedure for a Double Check 

Detector Assembly Using a Sight Tube 

— with August 1992 Revisions P-l 507.1 1 



AST 



American Society for Testing and Materials 
1916 Race Street 
Philadelphia, PA 19103-1187 



Standard Referenced 

reference Title in code 

number Section number 

A53 - 90b Specification for Pipe, Steel, Black and Hot- Dipped, 

Zinc-Coated Welded and Seamless Table P-403.4 

Table P-403.5, Table P-404. 1 
A74 - 92 Specification for Cast Iron Soil Pipe and 

Fittings Table P-404.1 

Table P-404.2, Table P-404.3, Table P-405.3, 
Table P-405.4, P-407.8 
A733 - 89 Specification for Welded and Seamless Carbon Steel and 

Austenitic Stainless Steel Pipe Nipples Table P-406.3 

B32 - 91 Specification for Solder, Metal P-509.4 

P-510.5 
B42 - 92 Specification for Seamless Copper Pipe, 

Standard Sizes Table P-403.4 

Table P-403.5, Table P-404.1 
B43 - 91 Specification for Seamless Red Brass Pipe, 

Standard Sizes Table P-403.4 

Table P-403.5, Table P-404. 1 

B75 - 92a Specification for Seamless Copper Tube Table P-403.4 

Table P-403.5, Table P-404. 1 , Table P-404.2, 

Table P-404.3, Table P-405.3 

B88 - 92 Specification for Seamless Copper Water Tube . . . Table P-403.4 

Table P-403.5, Table P-404. 1 , 

Table P-404.2, Table P-404.3, 

Table P-405.3 



82 



REFERENCED STANDARDS 



B 152- 92 
B25 1 - 88 

B302-88 
B306-92 

B447 - 92a 

B687-88 

B813-91 

C4-62 
C14-92 

C76 - 90 

C296-91 
C425-91 

C428-92 

C443 - 85a 

C508-90 
C564-88 

C700-91 

D1527-89 
D1785-91 
D1861 -88 

D 1862 -88 

D1869-78 

D2235 - 89 

D2239 - 89 

D2241-89 
D2282 - 89 
D2311 -88 
D2464-91 



ASTM (cont'd.) 

Specification for Copper Sheet, Strip Plate and 

Rolled Bar P-407.4 

Specification for General Requirements for Wrought 

Seamless Copper and Copper-Alloy Tube Table P-403.4 

Table P-403.5, Table P-404. 1, Table P-404.2, 
Table P-404.3, Table P-405.3 

Specification for Threadless Copper Pipe Table P-403.4 

Table P-403.5, Table P-404. 1 
Specification for Copper Drainage Tube 

(DWV) Table P-404.1 

Table P-405.3 

Specification for Welded Copper Tube Table P-403.4 

Table P-403.5 
Specification for Brass, Copper, and Chromium-Plated Pipe 

Nipples Table P-406.3 

Standard Specification for Liquid and Paste Fluxes for 
Soldering Applications of Copper and Copper Alloy 

Tube P-509.4 

P-5 10.5 

Specification for Clay Drain Tile Table P-404.3 

Table P-405.3, Table P-405.4 
Specification for Concrete Sewer, Storm Drain, 

and Culvert Pipe Table P-404.2 

Table P-404.3, Table P-405.3 
Specification for Reinforced Concrete Culvert, 

Storm Drain, and Sewer Pipe Table P-404.2 

Table P-404.3, Table P-405.3 
Specification for Asbestos-Cement Pressure 

Pipe Table P-403.4 

Specification for Compression Joints for Vitrified 

Clay Pipe and Fittings P-517.1 

P-518.1 
Specification for Asbestos-Cement 

Nonpressure Sewer Pipe Table P-404.2 

Table P-404.3, Table P-405.3 
Specification for Joints for Circular Concrete Sewer and 

Culvert Pipe, Using Rubber Gaskets P-508. 1 

P-518.1 
Specification for Asbestos-Cement 

Underdrain Pipe Table P-405.4 

Specification for Rubber Gaskets for Cast Iron Soil Pipe and 

Fittings P-507.4 

P-507.5, P-518.1 
Specification for Vitrified Clay Pipe, Extra Strength, 

Standard Strength, and Perforated Table P-404.3 

Table P-405.3, Table P-405.4 
Specification for Acrylonitrile-Butadiene-Styrene (ABS) 

Plastic Pipe, Schedules 40 and 80 Table P-403.4 

Specification for Poly (Vinyl Chloride)(PVC) Plastic Pipe, 

Schedules 40, 80 and 120 Table P-403.4 

Specification for Homogeneous Bituminized Fiber Drain 

and Sewer Pipe Table P-404.3 

Table P-405.3 
Specification for Laminated-Wall Bituminized Fiber Drain 

and Sewer Pipe Table P-404.3 

Table P-405.3 
Specification for Rubber Rings for 

Asbestos-Cement Pipe . P-504.1 

P-518.1 
Specification for Solvent Cement for 
Acrylonitrile-Butadiene- Styrene (ABS) Plastic Pipe 

and Fittings P-503.3 

Specification for Polyethylene (PE) Plastic Pipe 
(SIDR-PR) Based on Controlled 

Inside Diameter Table P-403.4 

Specification forPolv (Vinyl Chloride)(PVC) Plastic Pipe 

(SDR-Series) Table P-403.4 

Specification for Acrylonitrile-Butadiene-Styrene (ABS) 

Plastic Pipe (SDR-PR) Table P-403.4 

Specification for Perforated, Homogeneous Bituminized 

Fiber Pipe for General Drainage Table P-405.4 

Specification for Threaded Poly (Vinyl Chloride)(PVC) Plastic 
Pipe Fittings, Schedule 80 Table P-406.1 



D2466 
D2467 
D2468 
D2564 
D2609 
D2657 

D2661 

D2662 

D2665 

D2666 
D2672 

D2729 

D2737 
D2751 

D2846 

D2855 
D2949 

D3034 
D3139 

D3212 

D3309 

F405 - 
F409- 

F437 - 

F438- 
F439 - 
F441- 



ASTM (cont'd.) 

-90a Specification for Poly (Vinyl Chloride)(PVC) Plastic Pipe 

Fittings, Schedule 40 Table P-406.1 

- 92 Specification for Socket-Type Poly (Vinyl Chloride) 
(PVC) Plastic Pipe Fittings, Schedule 80 Table P-406.1 

- 90 Specification for Acrylonitrile-Butadiene-Styrene (ABS) 
Plastic Pipe Fittings, Schedule 40 Table P-406.1 

- 91 a Specification for Solvent Cements for Poly (Vinyl 
Chloride) (PVC) Plastic Pipe and Fittings P-5 1 6.3 

- 90a Specification for Plastic Insert Fittings for Polyethylene 
(PE) Plastic Pipe Table P-406.1 

- 90 Standard Practice for Heat-Joining Polyolefin Pipe and 
Fittings P-5 14.3 

P-5 15.3 

- 91 Specification for Acrylonitrile-Butadiene-Styrene (ABS) 
Schedule 40 Plastic Drain, Waste, and Vent Pipe and 
Fittings Table P-404.1 

Table P-404.2, Table P-404.3, Table P-405.3, 

P-503.3 

- 89 Specification for Polybutylene (PB) Plastic 
Pipe (SDR-PR) Based on Controlled Inside 
Diameter Table P-403.4 

- 91bSpecification for Poly (Vinyl Chloride) (PVC) Plastic 
Drain, Waste, and Vent Pipe and Fittings Table P-404. 1 

Table P-404.2, Table P-404.3, Table P-405.3 

- 89 Specification for Polybutylene (PB) 
Plastic Tubing Table P-403.4 

- 89 Specification for Joints for IPS PVC Pipe Using Solvent 
Cement Table P-403.4 

- 89 Specification for Poly (Vinyl Chloride) (PVC) Sewer Pipe 
and Fittings Table P-405.4 

- 89 Specification for Polyethylene (PE) Plastic 
Tubing Table P-403.4 

- 91 Specification for Acrylonitrile-Butadiene-Styrene (ABS) 
Sewer Pipe and Fittings Table P-404.3 

Table P-405.3 

- 92 Specification for Chlorinated Poly (Vinyl Chloride) 
(CPVC) Plastic Hot and Cold Water Distribution 
Systems Table P-403.4 

Table P-403.5, P-5 11. 3 

- 90 Standard Practice for Making Solvent-Cemented Joints 
with Poly (Vinyl Chloride) (PVC) Pipe and Fittings .. P-5 16.3 

- 89 Specification for 3.25-ln Outside Diameter Poly (Vinyl 
Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe 
and Fittings Table P-404.1 

Table P-404.2. Table P-404.3 

- 89 Specification for Type PSM Poly (Vinyl Chloride) (PVC) 
Sewer Pipe and Fittings Table P-404.3 

Table P-405.3 

- 89 Specification for Joints for Plastic Pressure Pipes Using 
Flexible Elastomeric Seals P-503.2 

P-5 16.2 
-92 Specification for Joints for Drain and Sewer Plastic Pipes 

Using Flexible Elastomeric Seals P-503.2 

P-5 16.2 

- 92 Specification for Polybutylene (PB) Plastic Hot Water 
Distribution Systems Table P-403.4 

Table P-403.5, P-5 14.3, P-5 14.4 

89 Specification for Corrugated Polyethylene (PE) Tubing and 
Fittings Table P-405.4 

91a Specification for Thermoplastic Accessible and 

Replaceable Plastic Tube and Tubular Fittings . . Table P-406.1 

89b Specification for Threaded Chlorinated Poly 

(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, 

Schedule 80 Table P-406.1 

90 Specification for Socket-Type Chlorinated Poly 
(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, 
Schedule 40 Table P-406.1 

90 Specification for Socket-Type Chlorinated Poly 
(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, 
Schedule 80 Table P-406. 1 

89 Specification for Chlorinated Poly (Vinyl Chloride) 

(CPVC) Plastic Pipe, Schedules 40 and 80 Table P-403.4 

Table P-403.5 



83 



THE BOCA NATIONAL PLUMBING CODE/1993 



PDI 



Plumbing unci Drainage Institute 
1 1 06 W. 77th Street, South Drive 
Indianapolis, IN 46260-3318 



Standard 
reference 
number 



Title 



Referenced 

in code 

Section number 



G 101 ~ 85 Testing and Rating Procedure for Grease Interceptors 

with Appendix of Sizing and Installation Data P-1004.4 



86 



APPENDIX A 

RATES OF RAINFALL FOR VARIOUS CITIES 

Rainfall rates, in inches per hour, are based on a storm of 1-hour duration and a 100-year return period. 



Alabama: 

Birmingham 3.8 

Huntsville 3.6 

Mobile 4.6 

Montgomery 4.2 

Alaska: 

Fairbanks 1.0 

Juneau 0.6 

Arizona: 

Flagstaff 2.4 

Nogales 3.1 

Phoenix 2.5 

Yuma 1.6 

Arkansas: 

Fort Smith 3.6 

Little Rock 3.7 

Texarkana 3.8 

California: 

Barstow 1 .4 

Crescent City 1.5 

Fresno 1.1 

Los Angeles 2.1 

Needles 1.6 

Piacerville 1.5 

San Fernando 2.3 

San Francisco 1.5 

Yreka 1.4 

Colorado: 

Craig 1.5 

Denver 2.4 

Durango 1.8 

Grand Junction 1.7 

Lamar 3.0 

Pueblo 2.5 

Connecticut: 

Hartford 2.7 

New Haven 2.8 

Putnam 2.6 

Delaware: 

Georgetown 3.0 

Wilmington 3.1 

District of Columbia: 

Washington 3.2 

Florida: 

Jacksonville 4.3 

Key West 4.3 

Miami 4.7 

Pensacola 4.6 

Tampa 4.5 

Georgia: 

Atlanta 3.7 

Dalton 3.4 

Macon 3.9 

Savannah 4.3 

Thomasville 4.3 



Hawaii: 

Hilo 6.2 

Honolulu 3.0 

Wailuku 3.0 

Idaho: 

Boise 0.9 

Lewiston 1.1 

Pocatello 1.2 

Illinois: 

Cairo 3.3 

Chicago 3.0 

Peoria ...3.3 

Rockford 3.2 

Springfield 3.3 

Indiana: 

Evansville .3.2 

Fort Wayne 2.9 

Indianapolis 3.1 

Iowa: 

Davenport 3.3 

Des Moines 3.4 

Dubuque 3.3 

Sioux City 3.6 

Kansas: 

Atwood 3.3 

Dodge City 3.3 

Topeka 3.7 

Wichita 3.7 

Kentucky: 

Ashland 3.0 

Lexington 3.1 

Louisville 3.2 

Middlesboro 3.2 

Paducah 3.3 

Louisiana: 

Alexandria 4.2 

Lake Providence 4.0 

New Orleans 4.8 

Shreveport 3.9 

Maine: 

Bangor 2.2 

Houlton 2.1 

Portland 2.4 

Maryland: 

Baltimore 3.2 

Hagerstown 2.8 

Oakland 2.7 

Salisbury .....3.1 

Massachusetts: 

Boston 2.5 

Pittsfield 2.8 

Worcester 2.7 

Michigan: 

Alpena 2.5 



Detroit 2.7 

Lansing 2.8 

Grand Rapids 2.6 

Marquette 2.4 

SaultSte. Marie 2.2 

Minnesota: 

Duluth 2.8 

Grand Marais 2.3 

Minneapolis 3.1 

Moorhead 3.2 

Worthington 3.5 

Mississippi: 

Biloxi 4.7 

Columbus 3.9 

Corinth 3.6 

Natchez 4.4 

Vicksburg 4.1 

Missouri: 

Columbia 3.2 

Kansas City 3.6 

Springfield 3.4 

St. Louis 3.2 

Montana: 

Ekalaka 2.5 

Havre 1.6 

Helena 1.5 

Kalispell 1.2 

Missoula 1.3 

Nebraska: 

North Platte 3.3 

Omaha 3.8 

Scottsbluff 3.1 

Valentine 3.2 

Nevada: 

Elko 1.0 

Ely 1.1 

Las Vegas 1.4 

Reno 1.1 

New Hampshire: 

Berlin 2.5 

Concord 2.5 

Keene 2.4 

New Jersey: 

Atlantic City 2.9 

Newark 3.1 

Trenton 3.1 

New Mexico: 

Albuquerque — 2.0 

Hobbs 3.0 

Raton 2.5 

Roswell 2.6 

Silver City 1.9 

New York: 

Albany 2.5 

Binghamton 2.3 



Buffalo 2.3 

Kingston 2.7 

New York 3.0 

Rochester 2.2 

North Carolina: 

Asheville 4.1 

Charlotte 3.7 

Greensboro 3.4 

Wilmington 4.2 

North Dakota: 

Bismarck 2.8 

Devils Lake 2.9 

Fargo 3.1 

Williston 2.6 

Ohio: 

Cincinnati 2.9 

Cleveland 2.6 

Columbus 2.8 

Toledo 2.8 

Oklahoma: 

Altus 3.7 

Boise City 3.3 

Durant 3.8 

Oklahoma City 3.8 

Oregon: 

Baker 0.9 

Coos Bay 1.5 

Eugene 1.3 

Portland 1.2 

Pennsylvania: 

Erie 2.6 

Harrisburg 2.8 

Philadelphia 3.1 

Pittsburgh 2.6 

Scranton 2.7 

Rhode Island: 

Providence 2.6 

South Carolina: 

Charleston 4.3 

Columbia 4.0 

Greenville 4.1 

South Dakota: 

Buffalo 2.8 

Huron 3.3 

Pierre 3.1 

Rapid City 2.9 

Yankton 3.6 

Tennessee: 

Chattanooga 3.5 

Knoxville 3.2 

Memphis 3.7 

Nashville 3.3 

Texas: 

Abilene 3.6 



87 



THE BOCA NATIONAL PLUMBING CODE/1993 



Amarillo 3.5 

Brownsville 4.5 

Dallas 4.0 

Del Rio 4.0 

El Paso 2.3 

Houston 4.6 

Lubbock 3.3 

Odessa 3.2 

Pecos 3.0 

San Antonio 4.2 

Utah: 

Brigham City 1.2 

Roosevelt 1.3 

Salt Lake City 1.3 

St. George 1.7 

Vermont: 

Barre 2.3 

Bratteboro 27 

Burlington 2.1 

Rutland 2.5 

Virginia: 

Bristol 27 

Charlottesville 2.8 

Lynchburg 3.2 

Norfolk 3.4 

Richmond 3.3 

Washington: 

Omak 1.1 

Port Angeles 1.1 

Seattle 1.4 

Spokane 1.0 

Yakima 1.1 

West Virginia: 

Charleston 2.8 

Morgantown 2.7 

Wisconsin: 

Ashland 2.5 

Eau Claire 2.9 

Green Bay 2.6 

La Crosse 3.1 

Madison 3.0 

Milwaukee 3,0 

Wyoming: 

Cheyenne 2.2 

Fort Bridger 1.3 

Lander 1.5 

New Castle 2.5 

Sheridan 17 

Yellowstone Park 1.4 



Source: National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



88 



APPENDIX A 




4.28 



100-YEAR, 1-HOUR RAINFALL (INCHES) 
EASTERN UNITED STATES 



Source: National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



89 



THE BOCA NATIONAL PLUMBING CODE/1993 




100-YEAR, 1-HOUR RAINFALL (INCHES) 
CENTRAL UNITED STATES 



Source: 



National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



90 



APPENDIX A 




100-YEAR, 1-HOUR RAINFALL (INCHES) 
WESTERN UNITED STATES 



Source: National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



91 



THE BOCA NATIONAL PLUMBING CODE/1993 




< 



-f : " 



Y 



100-YEAR, 1-HOUR RAINFALL (INCHES) 
ALASKA 



Source: National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



92 



APPENDIX A 




<^—v = 

£\ \ T < 

>v V - 



•4 X < 



100-YEAR, 1-HOUR RAINFALL (INCHES) 
HAWAII 



Source: National Weather Service, National Oceanic and Atmospheric Administration, Washington, D.C. 



93 



APPENDIX B 

GAS PIPING SYSTEMS 



This appendix contains Chapter 8 of the BOCA National Mechanical 
Code/1 993 and is not considered a part of the plumbing code. Appendix 
B is provided for informational purposes only since gas piping is often 



installed by a plumbing contractor and inspected by a plumbing inspec- 
tor. For further information, references should be made to the BOCA 
National Mechanical Code/1993. 



SECTION M-801.0 GENERAL 

M-80L1 Scope: This chapter shall govern the installation, repair and 
maintenance of fuel-gas piping systems. Coverage of piping systems 
extends from the point of delivery to the connections with each utiliza- 
tion device and includes the design, materials, components, fabrication, 
assembly, installation, testing, inspection, operation and maintenance of 
such piping systems. 

M -80 1.1.1 Point of delivery: Except for undiluted liquefied 
petroleum gas systems, the point of delivery is the outlet of the 
service meter assembly, or the outlet of the service regulator or 
service shutoff valve where a meter is not provided. For undiluted 
liquefied petroleum gas systems, the point of delivery is the outlet 
of the first stage pressure regulator. 

M-801.2 Liquefied petroleum gas storage: The storage system for 
liquefied petroleum gas shall be designed and installed in accordance 
with NFiPA 58 listed in Chapter 2 1 . 

M-801.3 Modifications to existing systems: In modifying or adding 
to existing piping systems, sizes shall be maintained in accordance with 
this chapter. 

M -801.4 Interconnections: Where two or more meters are installed on 
the same premises but supply separate consumers, the piping systems 
shall not be interconnected on the outlet side of the meters. 

M-801.5 Interconnections for standby fuels: Where a supplemental 

gas supply for standby utilization is connected downstream from a 
meter, an approved device to prevent backflow shall be installed. 

SECTION M-802.0 DEFINITIONS 

M-802.1 General: The following words and terms shall, for the pur- 
poses of this chapter and as stated elsewhere in this code, have the 
meanings shown herein. 

Dry gas: A gas having a moisture and hydrocarbon dew point below 
any normal temperature to which the gas piping is exposed. 

Gas outlet: A connection in a gas piping system to which gas equipment 
is intended to be attached. 

Heating value: The heat released by combustion of a unit quantity of 
waste or fuel, measured in British thermal units (Btu). 

Liquefied petroleum gas (LP- gas): A gas containing certain specific 
hydrocarbons which are gaseous under normal atmospheric condi- 
tions, but are capable of being liquefied under moderate pressure at 
normal temperatures. 

Manual gas shutoff valve: A manually operated valve in the gas line 
for the purpose of completely turning on or shutting off the gas 
supply downstream of the valve. 

Manufactured gas: A gas obtained by destructive distillation of coal, 
or by the thermal decomposition of oil, or by the reaction of steam 
passing through a bed of heated coal or coke or catalyst beds. 
Examples are coal gases, coke oven gases, producer gas, blast 
furnace gas, blue (water) gas, and carbureted water gas. British 
thermal unit (Btu) content varies widely. 



Natural gas: A naturally occurring mixture of hydrocarbon and non- 
hydrocarbon gases found in porous geologic formations beneath the 
earth's surface, often in association with petroleum. The principal 
constituent is methane. 

Purge: To clear of air, water or other foreign substances. 

Regulator, line gas pressure: A device placed in a gas line between the 
service pressure regulator and the gas equipment for controlling, 
maintaining or reducing the pressure in that portion of the piping 
system downstream of the device. 

Regulator, LP-gas, first stage: On undiluted LP-gas systems, the first 
pressure regulator reduces the storage container pressure. 

Regulator, LP-gas, second stage: A line gas pressure regulator for 
service on undiluted LP-gas systems, reducing an intermediate high 
pressure to utilization pressure. 

Regulator, service pressure: A device installed by the serving gas 
supplier to reduce and limit the service line gas pressure to delivery 
pressure. 

Riser, gas: A fuel gas supply pipe that extends vertically one full story 
or more. 

SECTION fVl-803.0 PIPING MATERIAL 

M-803.1 General: Piping material shall conform to the standards cited 
in this section for the installation, alteration or repair of fuel -gas piping 
systems. 

M-803.2 Piping standards: Fuel gas pipe shall conform to one of the 
standards listed in Table M-803.2. 

Table M-803.2 
FUEL GAS PIPE 



Material 


Standard (see Chapter 21) 


Aluminum-alloy pipe and tubing 


ASTMB210;ASTMB241 


Brass pipe 


ASTM B43 


Copper or copper-alloy pipe 


ASTM B42; ASTM B302 


Copper or copper-alloy tubing 
(TypeKorL) 


ASTM B75; ASTM B88; 


ASTMB280 


Ductile iron pipe 


ANSI A21.52 


Plastic pipe and tubing 


ASTMD2513;ASTMD2517 


Stainless steel pipe and tubing 


ASTM A240 


Steel pipe 


ASTM A53; ASTM A1 06 


Steel tubing 


ASTM A539; ASTM A254 



M-803.3 Metallic pipe and tubing: Metallic pipe and tubing shall be 
utilized for systems which supply fuel gas that is not corrosive to the 
pipe or tubing material, 

M-803.4 Aluminum-alloy pipe or tubing: Aluminum-alloy pipe or 
tubing shall not be installed underground or outside of the structure. The 
pipe or tubing shall not be subject to moisture or come in contact with 
masonry, plaster or insulation. 

M-803.5 Plastic pipe and tubing: Plastic pipe and tubing shall not be 
installed above ground or inside of the structure. 



95 



THE BOCA NATIONAL PLUMBING CODE/1993 



M-803.6 Ductile iron pipe: Ductile iron pipe shall not be installed 

above ground or inside of the structure. 

M-803.7 Corrosion protection: Metallic pipe or tubing exposed to 
corrosive action, such as soil conditions or moisture, shall be protected 
in an approved manner. 

M-803.8 Fittings: Fittings shall be approved for gas piping systems. 
The fittings shall be compatible with or shall be of the same material as 
the pipe or tubing. Bushings shall not be utilized. 

M-803.8. 1 Flanges: Flange fittings shall conform to ASME B 16.1 
or ASME B16.5 listed in Chapter 21. Gasket material for flanged 
fittings shall be approved for the quality of the fuel gas. 

M -803.9 Bending of piping: Pipe shall be approved for bending. Pipe 
bends shall be made with approved equipment. The bend shall not 
exceed the structural limitations of the pipe. 

M -803. 10 Flexible connectors: Flexible connectors shall bear the label 
of an approved agency. The connectors shall be a maximum of 6 feet 
(1829 mm) in length. 

M-803.11 Interior gas piping systems utilizing corrugated stainless 
steel tubing (conduit): Interior gas piping systems constructed of 
corrugated stainless steel tubing (conduit) shall be tested and labeled by 
an approved testing agency for such installation and shall be installed 
in accordance with the manufacturer's instructions. 

M-803 12 Identification: Fuel gas piping shall be identified as fuel gas 
piping. Identification shall be in the form of a tag, stencil or other 
permanent marking, spaced at intervals of not more than 25 feet (7620 
mm) in concealed locations, not more than 50 feet (5240 mm) in exposed 
locations, and not less than once in any room or space. 

SECTION M-804.0 JOINTS AND CONNECTIONS 

M -804.1. Approval: AM joints and connections shall be of an approved 
type for gas piping systems. Joints and connections shall be gas tight 
for the pressure required by test. 

M-804.1.1 Joints between different piping materials: Joints be- 
tween different piping materials shall be made with approved adapter 
fittings. Joints between different metallic piping materials at the 
point of delivery, and at other locations where necessary, shall be 
made with approved dielectric fittings to isolate electrically above- 
ground piping from underground piping or to isolate electrically 
different metallic piping materials joined underground. 

M-804.2 Preparation of pipe ends: All pipe shall be cut square, reamed 
and chamfered and be free from all burrs and obstructions. Pipe ends 
shall have full-bore openings and shall not be undercut. 

M-804.3 Joint preparation and installation: Where required by Sec- 
tions M-804.4 through M-804.1.1, the preparation and installation of 
brazed, flared, mechanical, threaded and welded joints shall comply 
with Sections M-804.3. 1 through M-804.3.5. 

M-804.3. 1 Brazed joints: All joint surfaces shall be cleaned. An 
approved flux shall be applied where required. The joint shall be 
brazed with a filler metal conforming to AWS A5.8 listed in Chapter 
21. 

M -804.3.2 Flared joints: Flared joints shall be made by a tool 

designed for that operation. 

M-804.3.3 Mechanical joints: Mechanical joints shall be installed 
in accordance with the manufacturer's instructions. 

M -804.3.4 Threaded joints: Threads shall conform to ASME 
Bl.20.1 listed in Chapter 21. Pipe-joint compound or tape shall be 
applied on the male threads only. 



M-804.3.5 Welded joints: All joint surfaces shall be cleaned by 

approved procedure. The joint shall be welded with an approved 
filler metal. 

M-804.4 Aluminum-alloy pipe and tubing: Joints between aluminum- 
alloy pipe and tubing or fittings shall be flared or mechanical joints 
conforming to Section M-804.3. 

M-804.5 Brass pipe: Joints between brass pipe or fittings shall be 
brazed, mechanical, threaded or welded joints conforming to Section 
M-804.3. 

M-804.6 Copper or copper-alloy pipe: Joints between copper or 
copper-alloy pipe or fittings shall be brazed, mechanical, threaded or 
welded joints conforming to Section M-804.3. 

M-804.7 Copper or copper-alloy tubing: Joints between copper or 
copper- alloy tubing or fittings shall be brazed, flared or mechanical 
joints conforming to Section M-804.3. 

M-804.8 Ductile iron pipe: Joints between ductile iron pipe and fittings 
shall be flanged. Joints shall be installed in accordance with the 
manufacturer's instructions. 

M-804.9 Plastic pipe and tubing: Joints between plastic pipe and 
tubing or fittings shall be in accordance with Sections M-804.9. 1 
through M-804.9.3. 

M-804.9.1 Heat-fusion joints: Only polyolefin (PE and PB) piping 
shall be heat fused. Joint surfaces shall be clean and free from 
moisture. All joint surfaces shall be heated to melt temperature and 
joined. The joint shall be undisturbed until cool in accordance with 
the manufacturer's instructions. 

M-804.9.2 Mechanical compression joints: Mechanical compres- 
sion joints shall be made with an elastomeric seal. Joints shall be 
installed in accordance with the manufacturer's instructions. 

M-804.9.3 Solvent cementing: Joint surfaces shall be clean and free 
from moisture. An approved primer shall be applied to PVC pipe, 
tubing or fittings. An approved solvent cement shall be applied to all 
joint surfaces. The joint shall be made while the cement is wet. Joints 
shall be made in accordance with the manufacturer's instructions. 
Polyolefin plastic pipe, tubing or fittings (PE and PB) shall not be 
solvent cemented. 

M-804.10 Steel pipe: Joints between steel pipe or fittings shall be 
threaded or welded joints conforming to Section M-804.3 or mechanical 
joints conforming to Section M-804.10.1. 

M-804.10.1 Mechanical joints: Joints shall be made with an ap- 
proved elastomeric seal. Mechanical joints shall be installed in 
accordance with the manufacturer's instructions. Mechanical joints 
shall be installed outside, underground, unless otherwise approved. 

M-804.11 Steel tubing: Joints between steel tubing or fittings shall be 

mechanical or welded joints conforming to Section M-804.3. 

SECTION ttf-805.0 SIZING OF GAS PIPING SYSTEMS 

M-805.1 General: All pipe utilized for the installation, extension and 
alteration of any gas piping system shall be sized to supply the full 
number of outlets for the intended purpose. The gas piping system shall 
be sized in accordance with this section. 

M-805.2 Appliance gas volume: The hourly gas volume for each 
gas-burning appliance shall be determined based on the input rating of 
the appliance. The hourly gas volume (demand quantity) shall equal the 
input rating of the appliance divided by the average heating value of the 
fuel gas. 

M-805.3 Sizing criteria: The fuel gas piping shall be sized for the 
maximum length of pipe, measured from the point of delivery to the 
most remote outlet. Piping shall be sized for the total gas demand for 
each section of pipe. 



96 



APPENDIX B 



M-805.3.1 Diversity factor for multiple-family dwelling units: 

The common gas supply line to multiple-family dwelling units is 
permitted to be sized for a percentage of the total gas demand. The 
total gas demand for each common section of pipe shall be sized in 
accordance with the multiplier indicated in Table M-805.3.1 . 

Where individual heating equipment is installed in each dwelling 
unit, the gas demand for such equipment shall be multiplied by 0.9 
and added to the demand value of the common piping. 

Table IV1-805.3.1 

DEMAND VALUES FOR DETERMINING GAS PIPING SIZE 
IN MULTIPLE-FAMILY DWELLING UNITS 



Low pressure (less than 1.5 psig): 





Multiplier of total connected load based on similar 


Number of units 


appliances being installed in each unit 




Ranges only 


Ranges and water heaters 


2 


.85 


.77 


4 


.65 


.59 


6 


.54 


.49 


8 


46 


.44 


10 


.42 


.40 


15 


.36 


.34 


20 


.31 


.30 


30 


.25 


.24 


40 


.23. 


.22 


50 


.21 


.20 


60 


.19 


.19 


70 


.18 


.18 


80 


.17 


.16 


90 


.16 


.15 


100 


.15 


.14 


125 


.14 


.14 


150 


.13 


.13 


175 


.13 


.12 


200 


.12 


.11 



M-805.4 Pipe sizing: The size of gas piping shall be determined by 
computing the maximum demand quantity in accordance with the 
following equation: 

High Pressure ( 1.5 psig and above): 



Q 



^ 



(Pi 



-p\)- 



Cr ■ fba ■ L 



= 2237 D 



,2.623 



(Pi 



■Ph- 



CrL 



0.541 



where: 

G = 

D = 

P\ = 

Pi = 
Y 

Cr - 



t 
Z 



fba 

L 

AH 



Q = 187.3 



V D 5 M 
Cr-fba 



AH 

fba-L 



2313D 



2.623 



AH 



-,0.541 



Cr L 



Rate, cubic feet per hour at 60 degrees F. and 30- inch 

mercury column. 

Inside diameter of pipe (inches). 

Upstream pressure (psia). 

Downstream pressure (psia). 

Superexpansibility factor. 

1/supercompressibility factor. 

Factor for viscosity, density and temperature. 

f 7 \ ]52 
0.00354 ST 



Specific gravity of gas at 60 degrees F. and 30-inch 

mercury column. 

Absolute temperature (degrees Rankine). 

t (degrees Fahrenheit) + 460. 

Temperature (degrees Fahrenheit). 

Viscosity of gas, centipoise (0.012 for natural gas, 

0.008 for propane). 

1488 ]Li. 

Viscosity (pounds per second feet). 

Base friction factor for air at 60 degrees F. (CF - 1 ). 

Length of pipe (feet). 

Pressure drop, inch water column (27.7 inch water 

column - 1 psi). 



CF = Factor CF = 



fba 



and 



fb = Base friction factor for any fluid at a given temperature 
(degrees R). 

M-805.4. 1 Sizing by tables: Gas piping systems are permitted to be 
sized for the maximum capacity of pipe in accordance with Tables 
M-805.4. 1(1) through M-805 .4.1(1 6). 

M-805.4. 1.1 Basis for table selection: The table selected for 
sizing the system shall be based on the fuel-gas system pressure, 
the pressure drop, and the specific gravity. 



Table M-805.4.1(1) 

MAXIMUM CAPACITY OF PIPE FOR GAS PRESSURE OF 0.5 PSIG OR LESS WITH PRESSURE DROP 

OF 0.5 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Pipe size of 














3 ipe capacity (cubic 


feet of gas per hour 


) 










Schedule 

40 standard 

pipe 

(inches) 


Internal 
diameter 
(inches) 






























Length of pipe (feet) 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


1 /4 


.364 


43 


29 


24 


20 


18 


16 


15 


14 


13 


12 


11 


10 


9 


8 


^8 


.493 


95 


65 


52 


45 


40 


36 


33 


31 


29 


27 


24 


22 


20 


19 


^ 


.622 


175 


120 


97 


82 


73 


66 


61 


57 


53 


50 


44 


40 


37 


35 


3/4 


.824 


360 


250 


200 


170 


151 


138 


125 


118 


110 


103 


93 


84 


77 


72 


1 


1.049 


680 


465 


375 


320 


285 


260 


240 


220 


205 


195 


175 


160 


145 


135 


1V4 


1.380 


1,400 


950 


770 


660 


580 


530 


490 


460 


430 


400 


360 


325 


300 


280 


1V 2 


1.610 


2,100 


1,460 


1,180 


990 


900 


810 


750 


690 


650 


620 


550 


500 


460 


430 


2 


2.067 


3,950 


2,750 


2,200 


1,900 


1,680 


1,520 


1,400 


1,300 


1,220 


1,150 


1,020 


950 


850 


800 


■2te- 


2.469 


6,3.00 


4,350 


3,520 


3,000 


2,650 


2,400 


2,250 


2,050 


1,950 


1,850 


1,650 


1,500 


1,370 


1,280 


3 


3.068 


11,000 


7,700 


6,250 


5,300 


4,750 


4,300 


3,900 


3,700 


3,450 


3,250 


2,950 


2,650 


2,450 


2,280 


4 


4.026 


23,000 


15,800 


12,800 


10,900 


9,700 


8,800 


8,100 


7,500 


7,200 


6,700 


6,000 


5,500 


5,000 


4,600 



97 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table rvi-805.4.1(2) 

MAXIMUM CAPACITY OF PIPE FOR GAS PRESSURE OF 0.5 PSIG OR LESS WITH PRESSURE DROP 
OF 0.3 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Pipe size of 














D ipe capacity (cubic feet of gas per hour 


) 










Schedule 
40 standard 


Internal 
diameter 








































Length of pipe (feet) 














pipe 


(inches) 
























































(inches) 




10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


V4 


.364 


32 


22 


18 


15 


14 


12 


11 


11 


10 


9 


8 


8 


7 


6 


3/6 


.493 


72 


49 


40 


34 


30 


27 


25 


23 


22 


21 


18 


17 


15 


14 


vs 


.622 


132 


92 


73 


63 


56 


50 


46 


43 


40 


38 


34 


31 


28 


26 


3/4 


.824 


278 


190 


152 


130 


115 


105 


96 


90 


84 


79 


72 


64 


59 


55 


1 


1.049 


520 


350 


285 


245 


215 


195 


180 


170 


160 


150 


130 


120 


110 


100 


IV4 


1.380 


1,050 


730 


590 


500 


440 


400 


370 


350 


320 


305 


275 


250 


225 


210 


V/L 


1.610 


1,600 


1,100 


890 


760 


670 


610 


560 


530 


490 


460 


410 


380 


350 


320 


2 


2.067 


3,050 


2,100 


1,65.0 


1,450 


1,270 


1,150 


1,050 


990 


930 


870 


780 


710 


650 


610 


21/5 


2.469 


4,800 


3,300 


2,700 


2,300 


2,000 


1,850 


1,700 


1,600 


1,500 


1,400 


1,250 


1,130 


1,050 


980 


3 


3.068 


8,500 


5,900 


4,700 


4,100 


3,600 


3,250 


3,000 


2,800 


2,600 


2,500 


2,200 


2,000 


1,850 


1,700 


4 


4.026 


17,500 


12,000 


9,700 


8,300 


7,400 


6,800 


6,200 


5,800^ 


5,400 


5,100 


4,500 


4,100 


3,800 


3,500 



TableM-805.4.1(3) 

MAXIMUM CAPACITY OF SEMI-RIGID TUBING FOR GAS PRESSURE OF 0.5 PSIG OR LESS WITH PRESSURE DROP 

OF 0.3 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Outside 


Tubing capacity (cubic feet of gas per hour) 


diameter 
(inch) 


Length of tubing (feet) 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


3 /8 


20 


14 


11 


10 


9 


8 


7 


7 


6 


6 


5 


5 


4 


4 


1/2 


42 


29 


23 


20 


18 


16 


15 


14 


13 


12 


11 


10 


9 


8 


5/8 


86 


59 


47 


40 


36 


33 


30 


28 


26 


25 


22 


20 


18 


17 


3/j 


150 


103 


83 


71 


63 


57 


52 


49 


46 


43 


38 


35 


32 


30 


7 /8 


212 


146 


117 


100 


89 


81 


74 


69 


65 


61 


54 


49 


45 


42 



TableM-805.4.1(4) 

MAXIMUM CAPACITY OF SEMI-RIGID TUBING FOR GAS PRESSURE OF 0.5 PSIG OR LESS WITH PRESSURE DROP 

OF 0.5 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Outside 


Tubing capacity (cubic feet of gas per hour) 


diameter 
(inch) 


Length of tubing (feet) 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


3/8 


27 


18 


15 


13 


11 


10 


9 


9 


8 


8 


7 


6 


6 


5 


Vfe 


56 


38 


31 


26 


23 


21 


19 


18 


17 


16 


14 


13 


12 


11 


5/8 


113 


78 


62 


53 


47 


43 


39 


37 


34 


33 


29 


26 


24 


22 


3/ 4 


197 


136 


109 


93 


83 


75 


69 


64 


60 


57 


50 


46 


42 


39 


7 /8 


280 


193 


155 


132 


117 


106 


98 


91 


85 


81 


71 


65 


60 


55 



Table M-805.4.1(5) 

PIPE SIZING TABLE FOR PRESSURES UNDER 1 POUND APPROXIMATE CAPACITY OF PIPES WITH PRESSURE DROP 

OF 0.3 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Pipe size of 
Schedule 

40 standard 

pipe 

(inches) 


Internal 
diameter 
(inches) 








P 


ipe capacity (cubic feet of gas per hour) 








Total equivalent length of pipe (feet) 


50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


215 


148 


119 


102 


90 


82 


70 


62 


43 


34 


29 


1.25 


1.380 


442 


304 


244 


209 


185 


168 


143 


127 


87 


70 


60 


1.50 


1.610 


662 


455 


366 


313 


277 


251 


215 


191 


131 


105 


90 


2.00 


2.067 


1,275 


877 


704 


602 


534 


484 


414 


367 


252 


203 


173 


2.50 


2.469 


2,033 


1,397 


1,122 


960 


851 


771 


660 


585 


402 


323 


276 


3.00 


3.068 


3,594 


2,470 


1,983 


1,698 


1,505 


1,363 


1,167 


1,034 


711 


571 


488 


3.50 


3.548 


5,262 


3,616 


2,904 


2,485 


2,203 


1,996 


1,708 


1,514 


1,041 


836 


715 


4.00 


4.026 


7,330 


5,038 


4,046 


3,462 


3,069 


2,780 


2,380 


2,109 


1,450 


1,164 


996 


5.00 


5.047 


13,261 


9,114 


7,319 


6,264 


5,552 


5,030 


4,305 


3,816 


2,623 


2,106 


1,802 


6.00 


6.065 


21,472 


14,758 


11,851 


10,143 


8,990 


8,145 


6,971 


6,178 


4,246 


3,410 


2,919 


8.00 


.7.981 


44,118 


30,322 


24,350 


20,840 


18,470 


16,735 


14,323 


12,694 


8,725 


7,006 


5,997 


10.00 


10.020 


80,130 


55,073 


44,225 


37,851 


33,547 


30,396 


26,015 


23,056 


15,847 


12,725 


10,891 


12.00 


11.938 


126,855 


87,187 


70,014 


59,923 


53,109 


48,120 


41,185 


36,501 


25,087 


20,146 


17,242 



98 



APPENDIX B 



Table M-805.4.1(6) 

PIPE SIZING TABLE FOR PRESSURES UNDER 1 POUND APPROXIMATE CAPACITY OF PIPES WITH PRESSURE DROP 

OF 0.5 INCH WATER COLUMN AND 0.60 SPECIFIC GRAVITY 



Pipe size ot 










P 


ipe capacity (cubic feet of gas per hour) 








Schedule 
40 standard 


Internal 
diameter 
































Total equivalent length of pipe (feet) 










pipe 
(inches) 


(inches) 
























50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


284 


195 


157 


134 


119 


108 


92 


82 


56 


45 


39 


1.25 


1.380 


583 


400 


322 


275 


244 


221 


189 


168 


115 


93 


79 


1.50 


1.610 


873 


600 


482 


412 


366 


331 


283 


251 


173 


139 


119 


2.00 


2.067 


1,681 


1,156 


928 


794 


704 


638 


546 


484 


333 


267 


229 


2.50 


2.469 


2,680 


1,842 


1,479 


1,266 


1,122 


1,017 


870 


771 


530 


426 


364 


3.00 


3.068 


4,738 


3,256 


2,615 


2,238 


1,983 


1,797 


1,538 


1,363 


937 


752 


644 


3.50 


3.548 


6,937 


4,767 


3,828 


3,277 


2,904 


2,631 


2,252 


1,996 


1,372 


1,102 


943 


4.00 


4.026 


9,663 


6,641 


5,333 


4,565 


4,046 


3,666 


3,137 


2,780 


1,911 


1,535 


1,313 


5.00 


5.047 


17,482 


12,015 


9,649 


8,258 


7,319 


6,632 


5,676 


5,030 


3,457 


2,776 


2,376 


6.00 


6.065 


28,308 


19,456 


15,624 


13,372 


11,851 


10,738 


9,190 


8,145 


5,598 


4,496 


3,848 


8.00 


7.981 


58,161 


39,974 


32,100 


27,474 


24,350 


22,062 


18,883 


16,735 


11,502 


9,237 


7,905 


10.00 


10.020 


105,636 


72,603 


58,303 


49,900 


44,225 


40,071 


34,296 


30,396 


20,891 


16,776 


14,358 


12.00 


11.938 


167,236 


114,940 


92,301 


78,998 


70,014 


63,438 


54,295 


48,120 


33,073 


26,559 


22,731 



Table M-805.4.1(7) 

PIPE SIZING TABLE FOR PRESSURES UNDER 1 POUND PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE 

OF 1 .0 PSIG WITH A 10-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 



Pipe size of 
Srhpriulp 


Intprnaf 


Pipe capacity (cubic feet of gas per hour) 


40 standard 

pipe 

(inches) 


diameter 
(inches) 


Total equivalent length of pipe (feet) 


50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


717 


493 


396 


338 


300 


272 


233 


206 


142 


114 


97 


1.25 


1.380 


1,471 


1,011 


812 


695 


616 


558 


478 


423 


291 


234 


200 


1.50 


1.610 


2,204 


1,515 


1,217 


1,041 


923 


836 


716 


634 


436 


350 


300 


2.00 


2.067 


4,245 


2,918 


2,343 


2,005 


1,777 


1,610 


1,378 


1,222 


840 


674 


577 


2.50 


2.469 


6,766 


4,651 


3,735 


3,196 


2,833 


2,567 


2,197 


1,947 


1,338 


1,075 


920 


3.00 


3.068 


1 1 ,962 


8,221 


6,602 


5,650 


5,008 


4,538 


3,884 


3,442 


2,366 


1,900 


1,626 


3.50 


3.548 


17,514 


12,037 


9,666 


8,273 


7,332 


6,644 


5,686 


5,039 


3,464 


2,781 


2,381 


4.00 


4.026 


24,398 


16,769 


13,466 


11,525 


10,214 


9,255 


7,921 


7,020 


4,825 


3,875 


3.316 


5.00 


5.047 


44,140 


30,337 


24,362 


20,851 


18,479 


16,744 


14,330 


12,701 


8,729 


7,010 


6.000 


6.00 


6.065 


71,473 


49,123 


39,447 


33,762 


29,923 


27,112 


23,204 


20,566 


14,135 


11,351 


9715 


8.00 


7.981 


146,849 


100,929 


81,049 


69,368 


61,479 


55,705 


47,676 


42,254 


29,041 


23,321 


19,960 


10.00 


10.020 


266,718 


183,314 


147,207 


125,990 


111,663 


101,175 


86,592 


76,745 


52,747 


42,357 


36,252 


12.00 


11.938 


422,248 


290,209 


233,048 


199,459 


176,777 


160,172 


137,087 


121,498 


83,505 


67,057 


57,392 



Table M-805.4.1(8) 

PIPE SIZING TABLE FOR 2 POUNDS PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE OF 

2.0 PSIG WITH A 10-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 



Pipe size of 
Srhpdulp 


Internal 








P 


ipe capacity (cubic feet of gas per hour) 








40 standard 


diameter 










Total equivalent length of pipe (feet) 










pipe 
(inches) 


(inches) 
























50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


1,112 


764 


614 


525 


466 


422 


361 


320 


220 


177 


151 


1.25 


1.380 


2,283 


1,569 


1,260 


1,079 


956 


866 


741 


657 


452 


363 


310 


1.50 


1.610 


3,421 


2,351 


1,888 


1,616 


1,432 


1,298 


1,111 


984 


677 


543 


465 


2.00 


2.067 


6,589 


4,528 


3,636 


3,112 


2,758 


2,499 


2,139 


1,896 


1,303 


1,046 


896 


2.50 


2.469 


10,501 


7,217 


5,796 


4,961 


4,396 


3,983 


3,409 


3,022 


2,077 


1,668 


1,427 


3.00 


3.068 


18,564 


12,759 


10,246 


8,769 


7,772 


7,042 


6,027 


5,342 


3,671 


2,948 


2,523 


3.50 


3.548 


27,181 


18,681 


15,002 


12,840 


11,379 


10,311 


8,825 


7,821 


5,375 


4,317 


3,694 


4.00 


4.026 


37,865 


26,025 


20,899 


17,887 


15,853 


14,364 


12,293 


10,895 


7,488 


6,013 


5,147 


5.00 


5.047 


68,504 


47,082 


37,809 


32,359 


28,680 


25,986 


22,240 


19,711 


13,547 


10,879 


9,311 


6.00 


6.065 


110,924 


76,237 


61,221 


52,397 


46,439 


42,077 


36,012 


31,917 


21,936 


17,616 


15,077 


8.00 


7.981 


227,906 


156,638 


125,786 


107,657 


95,414 


86,452 


73,992 


65,578 


45,071 


36,194 


30,977 


10.00 


10.020 


413,937 


284,497 


228,461 


195,533 


173,297 


157,020 


134,389 


119,106 


81,861 


65,737 


56,263 


12.00 


11.938 


655,315 


450,394 


361,682 


309,553 


274,351 


248,582 


212,754 


188,560 


129,596 


104,070 


89,071 



99 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table M-805.4.1(9) 

PIPE SIZING TABLE FOR 2 POUNDS PRESSURE CAPACITY OF PIPES OR TUBING FROM POINT OF DELIVERY TO 

2 PSIG REGULATOR, BASED ON A PRESSURE DROP OF 1.5 PSI AND A GAS OF 0.65 SPECIFIC GRAVITY 3 



Tubing 


Pipe capacity (cubic feet of gas per hour) 


diameter 
inside (OD) 


Length of tubing (feet) 


(inches) 


5 


10 


15 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


250 


300 


v 4 m 


540 


360 


285 


240 


192 


163 


143 


130 


118 


110 


102 


96 


85 


76 


69 


64 


58 


51 


3 /t m 


1,260 


850 


670 


570 


450 


380 


335 


300 


275 


255 


240 


225 


198 


178 


164 


146 


140 


120 


■V6 my- 


2,400 


1,630 


1,280 


1,080 


860 


730 


645 


580 


530 


490 


460 


430 


380 


340 


315 


290 


255 


•230 


5 /B 3 /4 


4,150 


2,780 


2,150 


1,860 


1,480 


1,250 


1,100 


1,000 


'J 910 


850 


790 


740 


650 


585 


540 


500 


440 


395 


3 /4 M 


6,500 


4,350 


3,450 


2,950 


2,300 


2,000 


1,750 


1,560 


1,430 


1,330 


1,230 


1,160 


1,025 


920 


845 


780 


690 


620 


1 (iu 


10,500 


7,600 


6,200 


5,400 


4,400 


3,800 


3,350 


3,050 


2,800 


2,650 


2,500 


2,350 


2,100 


1,900 


1,800 


1,700 


1,500 


1,350 


VA 1 3 /8) 


21,000 


15,000 


12,000 


10,500 


8,600 


7,500 


6,700 


6,100 


5,600 


5,200 


4,900 


4,700 


4,150 


3,800 


3,550 


3,300 


2,950 


2,700 


V/i 1 5 /s) 


31,000 


22,000 


18,000 


15,000 


13,000 


11,000 


9,800 


9,000 


8,200 


7,700 


7,200 


6,800 


6,100 


5,600 


5,200 


4,900 


4,300 


4,000 


2 \2%) 


58,000 


41,000 


34,000 


29,000 


24,000 


20,000 


18,000 


17,000 


15,000 


14,000 


13,500 


1 2,500 


11,300 


10,400 


9,700 


9,000 


8,100 


7,400 


\2%-n&Ar 


90^000 


64;000 


52,000 


45,000 


36,000 


32,000 


28,000 


26,000 


24,000 


22,000 


21,000 


20,000 


18,000 


16,000 


15,500 


14,000 


12,500 


11,500 


3 h%) 


150M 


110M 


90,000 


79,000 


63,000 


55,000 


49,000 


45,000 


4i,000 


38,000 


36,000 


34,500 


31,000 


28,000 


26,000 


24,000 


22,000 


19,000 


4 (4V&) 


31 OM 


220M 


180M 


150M 


125M 


110M 


97,000 


90,000 


82,000 


77,000 


72,000 


70,000 


62,000 


56,000 


53,000 


49,000 


44,000 


40,000 



Note a. Use this table when metering or reduced pressure is 2 psig. Minimum inlet pressure to pounds-to-inches regulator will be Vfc pound or 14 inches. 

Table ^-805.4.1(10) 

PIPE SIZING TABLE FOR 2 POUNDS PRESSURE CAPACITY OF PIPES OR TUBING FROM 2 PSIG REGULATOR TO APPLIANCE, 

BASED ON A PRESSURE DROP OF 1 INCH WATER COLUMN AND A GAS OF 0.65 SPECIFIC GRAVITY 3 



Tubing 


Pipe capacity (cubic feet of gas per hour) 


diameter 


































inside (OD) 
















Length of tubing (feet) 
















(inches) 


5 


10 


15 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


175 


200 


250 


300 


1 /4 p*) 


62 


42 


33 


28 


22 


19 


16 


15 


14 


13 


12 


11 


10 


9 


8 


7 


6 


6 


^ (V&) 


145 


96 


76 


66 


52 


44 


39 


35 


32 


30 


28 


26 


23 


21 


19 


18 


16 


14 


V>? 5/8 ■■ 


280 


187 


148 


126 


100 


84 


74 


67 


61 


57 


53 


50 


44 


39 


36 


34 


30 


26 


5 /8 ( 3 A) 


475 


320 


252 


215 


170 


145 


129 


115 


105 


97 


91 


86 


76 


68 


62 


58 


51 


45 


3/4 ( 7 A) 


750 


500 


395 


335 


265 


225 


200 


180 


165 


153 


142 


134 


118 


106 


97 


90 


79 


71 


1 (1 1 /8) 


1,080 


760 


620 


520 


440 


380 


345 


315 


290 


270 


255 


240 


215 


195 


180 


170 


150 


140 


iv 4 \m 


2,200 


1,550 


1,300 


1,100 


900 


795 


700 


640 


600 


560 


520 


500 


450 


410 


380 


355 


315 


285 


V/i 1H 


3,450 


2,450 


2,000 


1,700 


1,400 


1,200 


1,100 


1,000 


920 


860 


810 


770 


690 


620 


580 


540 


490 


445 


2 ..\M 


7,000 


4,950 


4,000 


3,450 


2,850 


2,500 


2,200 


2,000 


1,850 


1,750 


1,650 


1,580 


1,400 


1,290 


1,190 


1,100 


980 


900 


2K ■..{&*) 


11,200 


8,000 


6,500 


5,600 


4,600 


4,000 


3,550 


3,250 


3,000 


2,800 


2,650 


2,500 


2,250 


2,050 


1,900 


1,780 


1,600 


1,460 


3 (31/8) 


20,000 


14,200 


11,500 


10,000 


8,300 


7,200 


6,350 


5,800 


5,400 


5,050 


4,750 


4,500 


4,000 


3,650 


3,400 


3,200 


2,850 


2,600 


4 (4H) 


42,000 


29,500 


24,000 


21,000 


17,000 


14,500 


13,000 


12,000 


11,000 


10,400 


9,700 


9,300 


8,400 


7,600 


7,000 


6,600 


5,900 


5,400 



Note a. Use this table when metering or reducing pressure is 6 inches water column. 



Table M-805.4.1(11) 

PIPE SIZING TABLE FOR 5 POUNDS PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE OF 

5.0 PSIG WITH A 10-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 



Pipe size of 

Schedule 

40 standard 




Pipe capacity (cubic feet of gas per hour) 


diameter 










Total equivalent length of pipe (feet) 










pipe 
(inches) 


(inches) 




















50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


1,989 


1,367 


1,098 


940 


833 


755 


646 


572 


393 


316 


270 


1,25 


1.380 


4,084 


2,807 


2,254 


1,929 


1,710 


1,549 


1,326 


1,175 


808 


649 


555 


1.50 


1.610 


6,120 


4,206 


3,378 


2,891 


2,562 


2,321 


1,987 


1,761 


1,210 


972 


832 


2.00 


2.067 


11,786 


8,101 


6,505 


5,567 


4,934 


4,471 


3,827 


3,391 


2,331 


1,872 


1,602 


2.50 


2.469 


18,785 


12,911 


1 0,368 


8,874 


7,865 


7,126 


6,099 


5,405 


3,715 


2,983 


2,553 


3.00 


3.068 


33,209 


22,824 


18,329 


15,687 


13,903 


12,597 


10,782 


9,556 


6,568 


5,274 


4,514 


3.50 


3.548 


48,623 


33,418 


26,836 


22,968 


20,356 


18,444 


15,786 


13,991 


9,616 


7,722 


6,609 


4.00 


4.026 


67,736 


46,555 


37,385 


31,997 


28,358 


25,694 


21,991 


19,490 


13,396 


10,757 


9,207 


5.00 


5.047 


122,544 


84,224 


67,635 


57,887 


51,304 


46,485 


39,785 


35,261 


24,235 


19,461 


16,656 


6.00 


6.065 


198,427 


136,378 


109,516 


93,732 


83,073 


75,270 


;:■■ 64,421 


57,095 


39,241 


31,512 


26,970 


8.00 


7.981 


407,692 


280,204 


225,014 


192,583 


170,683 


154,651 


132,361 


117,309 


80,626 


64,745 


55,414 


10.00 


10.020 


740,477 


508,926 


408,686 


349,782 


310,005 


280,887 


240,403 


213,065 


146,438 


117,595 


100,646 


12.00 


11.938 


1,172,269 


805,694 


647,001 


553,749 


490,777 


444,680 


380,588 


337,309 


231,830 


186,168 


159,336 



100 



APPENDIX B 



Table M-805.4.1(12) 

PIPE SIZING TABLE FOR 10 POUNDS PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE OF 

10.0 PSIG WITH A 10-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 



Pipe size of 










Pipe capacity (cubic feet of gas per hour) 








Rrhpriiilp 


Intprnal 






















40 standard 

pipe 

(inches) 


diameter 
(inches) 


Total equivalent length of pipe (feet) 


50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


3,259 


2,240 


1,798 


1,539 


1,364 


1,236 


1,058 


938 


644 


517 


443 


1.25 


1.380 


6,690 


4,598 


3,692 


3,160 


2,801 


2,538 


2,172 


1,925 


1,323 


1,062 


909 


1.50 


1.610 


10,024 


6,889 


5,532 


4,735 


4,197 


3,802 


3,254 


2,884 


1,982 


1,592 


1,362 


2.00 


2.067 


19,305 


13,268 


10,655 


9,119 


8,082 


7,323 


6,268 


5,555 


3,818 


3,066 


2 ; 624 


2.50 


2.469 


30,769 


21,148 


16,982 


14,535 


12,882 


11,672 


9,990 


8,854 


6,085 


4,886 


4:182 


3.00 


3.068 


54,395 


37,385 


30,022 


25,695 


22,773 


20,634 


17,660 


15,652 


10,757 


8,638 


7,393 


3.50 


3.548 


79,642 


54,737 


43,956 


37,621 


33,343 


30,211 


25,857 


22,916 


15,750 


12,648 


10,825 


4.00 


4.026 


110,948 


76,254 


61,235 


52,409 


46,449 


42,086 


36,020 


31,924 


21,941 


17,620 


15,080 


5.00 


5.047 


200,720 


137,954 


110,782 


94,815 


84,033 


76,140 


65,166 


57,755 


39,695 


1,875 


27,282 


6.00 


6.065 


325,013 


223,379 


179,382 


153,527 


136,068 


123,288 


105,518 


93,519 


64,275 


51,615 


44;176 


8.00 


7.981 


667,777 


458,959 


368,561 


315,440 


279,569 


253,310 


216,800 


192,146 


132,061 


106,050 


90,765 


10.00 


10.020 


1,212,861 


833,593 


669,404 


572,924 


507,772 


460,078 


393,767 


348,988 


239,858 


192,614 


164,853 


12.00 


11.938 


1,920,112 


1,319,682 


1,059,751 


907,010 


803,866 


728,361 


623,383 


552,493 


379,725 


304,933 


260,980 



Table M-805.4.1(13) 
PIPE SIZING TABLE FOR 20 POUNDS PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE OF 







20.0 PSIG WITH A 1 0-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 






Pipe size of 








Pipe capacity (cubic feet of gas per hour) 








Srhprinlp 


Internal 


















40 standard 

pipe 

(inches) 


diameter 
(inches) 


Total equivalent length of pipe (feet) 


50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


5,674 


3,900 


3,132 


2,680 


2,375 


2,152 


1,842 


1,633 


1,122 


901 


771 


1.25 


1.380 


11,649 


8,006 


6,429 


5,503 


4,877 


4,419 


3,782 


3,352 


2,304 


1,850 


1,583 


1.50 


1.610 


17,454 


11,996 


9,633 


8,245 


7,307 


6,621 


5,667 


5,022 


3,452 


2,772 


2,372 


2.00 


2.067 


33,615 


23,103 


18,553 


15,879 


14,073 


12,751 


10,913 


9,672 


6,648 


5,338 


4,569 


2.50 


2.469 


53,577 


36,823 


29,570 


25,308 


22,430 


20,323 


17,394 


15,416 


10,595 


8,509 


7,282 


3.00 


3.068 


94,714 


65,097 


52,275 


44,741 


39,653 


35,928 


30,750 


27,253 


18,731 


15,042 


12,874 


3.50 


3.548 


138,676 


95,311 


76,538 


65,507 


58,058 


52,604 


45,023 


39,903 


27,425 


22,023 


18,849 


4.00 


4.026 


193,187 


132,777 


106,624 


91,257 


80,879 


73,282 


62,720 


55,538 


38,205 


30,680 


26,258 


5.00 


5.047 


349,503 


240,211 


192,898 


165,096 


146,322 


132,578 


113,470 


100,566 


69,118 


55,505 


47,505 


6.00 


6 065 


565,926 


388,958 


312,347 


267,329 


236,928 


214,674 


183,733 


162,840 


111,919 


89,875 


76,921 


8.00 


7.981 


1,162,762 


799,160 


641,754 


549,258 


486,797 


441,074 


377,502 


334,573 


229,950 


184,658 


158,048 


10.00 


10.020 


2,111,887 


1,451,488 


1,165,596 


997,600 


884,154 


801,108 


685,645 


607,674 


417,651 


335,388 


287,049 


12.00 


11.938 


3,343,383 


2,297,888 


1,845,285 


1,579,326 


1,399,727 


1,268,254 


1,085,462 


962,025 


661,194 


530,962 


L 454,435 



Table M-805.4.1(14) 

PIPE SIZING TABLE FOR 50 POUNDS PRESSURE CAPACITY OF PIPES FOR AN INITIAL PRESSURE OF 

50.0 PSIG WITH A 10-PERCENT PRESSURE DROP AND A GAS OF 0.60 SPECIFIC GRAVITY 



Pipe size of 










Pipe capacity (cubic feet of gas per hour) 








Srhpfinlp 


Intprnal 




















40 standard 


diameter 










Tota! equivalent length of pipe (feet) 










pipe 
(inches) 


(inches) 




















50 


100 


150 


200 


250 


300 


400 


500 


1,000 


1,500 


2,000 


1.00 


1.049 


12,993 


8,930 


7,171 


6,138 


5,440 


4,929 


4,218 


3,739 


2,570 


2,063 


1,766 


1.25 


1.380 


26,676 


18,335 


14,723 


12,601 


11,168 


10,119 


8,661 


7,676 


5,276 


4,236 


3,626 


1.50 


1.610 


39,970 


27,471 


22,060 


18,881 


16,733 


15,162 


12,976 


11,501 


7,904 


6,348 


5,433 


2.00 


2.067 


76,977 


52,906 


42,485 


36,362 


32,227 


29,200 


24,991 


22,149 


15,223 


12,225 


10;463 


2.50 


2.469 


122,690 


84,324 


67,715 


57,955 


51,365 


46,540 


39,832 


35,303 


24,263 


19,484 


16,676 


3.00 


3.068 


216,893 


149,070 


119,708 


102,455 


90,804 


82,275 


70,417 


62,409 


42,893 


34,445 


29,480 


3.50 


3.548 


317,564 


218,260 


175,271 


150,009 


132,950 


120,463 


103,100 


91,376 


62,802 


50,432 


43,164 


4.00 


4.026 


442,393 


304,054 


244,166 


208,975 


185,211 


167,814 


143,627 


127,294 


87,489 


70,256 


60,130 


5.00 


5.047 


800,352 


550,077 


441,732 


378,065 


335,072 


303,600 


259,842 


230,293 


158,279 


127,104 


108,784 


6.00 


6.065 


1,295,955 


890,703 


715,266 


612,175 


542,559 


491,598 


420,744 


372,898 


256,291 


205,810 


176,147 


8.00 


7.981 


2,662,693 


1,830,054 


1,469,598 


1,257,785 


1,114,752 


1,010,046 


864,469 


766,163 


526,579 


422,862 


361,915 


10.00 


10.020 


4,836,161 


3,323,866 


2,669,182 


2,284,474 


2,024,687 


1,834,514 


1,570,106 


1,391,556 


956,409 


768,030 


657,334 


12.00 


11.938 


7,656,252 


5,262,099 


4,225,651 


3,616,611 


3,205,335 


2,904,266 


2,485,676 


L 2,203,009 


1,514,115 


1,215,888 


1,040,843 



101 



THE BOCA NATIONAL PLUMBING CODE/1993 



Table IW-805.4.1(15) 

MAXIMUM CAPACITY OF PIPE FOR UNDILUTED LIQUEFIED PETROLEUM GASES AT 11 INCHES WATER COLUMN INLET PRESSURE 

BASED ON A PRESSURE DROP OF 0.5 INCH WATER COLUMN 



Nominal 


Pipe capacity (thousands of Btu per hour) 


iron pipe 
size 


Length of pipe (feet) 


(inches) 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


150 


K 


275 


189 


152 


129 


114 


103 


96 


89 


83 


78 


69 


63 


3/4 


567 


393 


315 


267 


237 


217 


196 


185 


173 


162 


146 


132 


1 


1,071 


732 


590 


504 


448 


409 


378 


346 


322 


307 


275 


252 


V/A 


2,205 


1,496 


1,212 


1,039 


913 


834 


771 


724 


677 


630 


567 


511 


1Vfc 


3,307 


2,299 


1,858 


1,559 


1,417 


1,275 


1,181 


1,086 


1,023 


976 


866 


787 


2 


6,221 


4,331 


3,465 


2,992 


2,646 


2,394 


2,205 


2,047 


1,921 


1,811 


1,606 


1,496 



Table M-805.4.1 (16) 

MAXIMUM CAPACITY OF SEMI-RIGID TUBING FOR UNDILUTED LIQUEFIED PETROLEUM GASES 

AT 11 INCHES WATER COLUMN INLET PRESSURE 

BASED ON A PRESSURE DROP OF 0.5 INCH WATER COLUMN 



Outside 


Tubing capacity (thousands of Btu per hour) 


diameter 
(inch) 


Length of tubing (feet) 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


3/8 


39 


26 


21 


19 


— 


— 


— 


— 


— 





V2 


92 


62 


50 


41 


37 


35 


31 


29 


27 


26 


5/ 8 


199 


131 


107 


90 


79 


72 


67 


62 


59 


55 


3/4 


329 


216 


181 


145 


131 


121 


112 


104 


95 


90 


7 /8 


501 


346 


277 


233 


198 


187 


164 


155 


146 


138 



M-805.4.I.2 Table application: The length utilized to compute 

the gas pipe size for a section of pipe shall equal the maximum 
length of pipe for the entire system. The tables take into con- 
sideration the normal installation of valves and fittings. 

M-805.4.1.3 Specific gravity other than O.60: Where the 

specific gravity of the gas is other than 0.60, the values in Tables 
M"805.4.J(1) through M-805.4.1(14) shall be multiplied by the 
applicable value from Table M-805.4.1.3. 

Table M-805.4.1.3 

MULTIPLIERS FOR SPECIFIC GRAVITY OF THE GAS 

OTHER THAN 0.60 



Specific gravity 


Multiplier 


Specific gravity 


Multiplier 


.35 


1.31 


1.00 


.78 


.40 


1.23 


1.10 


.74 


,45 


1.16 


1.20 


.71 


.50 


1.10 


1.30 


.68 


.55 


1.04 


1.40 


.66 


.60 


1.00 


1.50 


.63 


.65 


.96 


1.60 


.61 


.70 


.93 


1.70 


.59 


.75 


.90 


1.80 


.58 


.80 


.87 


1.90 


.56 


.85 


.84 


2.00 


.55 


.90 


.82 


2.10 


.54 



M-805.5 Maximum design pressure: The maximum design operating 
pressure of a system inside the structure shall not exceed 5 psig (34kPa) 
unless otherwise approved. 

Exceptions 

1 . Industrial processing or heating structures. 

2. Research structures. 

3. Structures that exclusively contain boilers or mechanical 
equipment. 

4. Where the piping system is welded steel pipe. 



5. Where the piping is a temporary installation for structures 
under construction. 

M-805.5. 1 Liquefied petroleum gas systems: The maximum de- 
sign operating pressure for undiluted LP-gas systems shall be 20 psig 
(138 kPa). 

Exception: The maximum design operating pressure shall not 
apply to structures, or separate areas of structures, constructed in 
accordance with Chapter 7 of NFiPA 58 listed in Chapter 21 , and 
which exclusively contain industrial processes, research and 
experimental laboratories, or equipment or processing having 
similar hazards. 

SECTION fti-806.0 GAS FLOW CONTROLS 

M-806.1 Gas pressure regulators: A gas pressure regulator or gas 
equipment pressure regulator shall be installed where the gas appliance 
is designed to operate at a lower pressure than the fuel gas system. 
Access shall be provided to pressure regulators. Pressure regulators shall 
be protected from physical damage. Regulators installed on the exterior 
of the building shall be approved for outdoor installation. 

M-806.1.1 Second stage LP-gas regulators: Second stage regula- 
tors for undiluted liquefied petroleum gas piping systems shall 
conform to UL 144 listed in Chapter 21. 

M-806.2 Venting of regulators: Gas pressure regulators that require a 
vent shall have an independent vent to the outside of the building. The 
vent shall be designed to prevent the entry of water or foreign objects. 

Exception: A vent to the outside of the building is not required for 
second stage regulators equipped with and labeled for utilization 
with approved vent-limiting devices. 

SECTION M-807.0 UNDERGROUND GAS PIPING 

M-807.1 Clearance: Underground gas piping shall be installed to allow 
proper maintenance and to protect against contact or damage resulting 



102 



APPENDIX 6 



from proximity to other structures. Underground plastic piping shall be 
installed with sufficient clearance from any source of heat 

M-807.2 Minimum depth: Underground piping systems shall be in- 
stalled a minimum depth of 1 8 inches (457 mm) below grade except as 
provided for in Section M-807.2.1. 

M -807.2.1 Individual outside appliances: Individual gas lines to 
outside lights, grills or other appliances shall be installed a minimum 
of 8 inches (203 mm) below grade provided that such installation is 
approved and is installed in locations not susceptible to physical 
damage. 

M -807. 2.2 Protection of footings: Trenching installed parallel to 
footings shall not extend below the line of a 45 -degree (0.79 rad) 
angle downward from the loadbearing plane of the footing, and shall 
conform to the requirements of the building code listed in Chapter 
21. 

M -807.3 Protection against corrosion: Gas piping in contact with 

material that will corrode the piping shall be protected in an approved 
manner. Where dissimilar metals are joined underground, dielectric 
fittings or couplings shall be installed. 

IV! -807.4 Connection of plastic piping: Connections between metallic 
and plastic piping shall only be made outside, underground, with 
approved fittings. Where plastic pipe is connected to rigidly held 
fittings, a protective sleeve complying with the manufacturer's instruc- 
tions shall be installed. 

M-807.5 Piping through foundation walls: Where installed below 
grade through the outer foundation or basement wall of a structure, 
underground piping shall be encased in an approved sleeve. The annular 
space between the gas piping and the sleeve shall be sealed at the 
foundation or basement wall to prevent entry of gas or water. 

M -807.6 Flood hazard: All underground piping located in a flood- 
hazard zone (A Zone) or a high-hazard zone (V Zone) shall be capable 
of resisting hydrostatic and hydrodynamic loads and stresses, including 
the effects of buoyancy, during the occurrence of flooding to the base 
flood elevation. 

M-807.7 Tracer for plastic piping: An insulated copper tracer wire or 
other approved conductor shall be installed adjacent to underground 
nonmetallic gas piping. Access shall be provided to the tracer wire or 
the tracer wire shall terminate above ground at each end of the non- 
metallic gas piping. The tracer wire size shall not be less than 18 AWG 
and the insulation type shall be suitable for direct burial. 

Exception: A tracer wire is not required for individual gas lines to 
outside lights and grills installed in accordance with Section M- 
807.2.1. 

SECTION M-808.0 OUTSIDE ABOVE-GROUND PIPING 

M -808.1 General: Piping installed outside above ground shall be 
securely supported and protected from physical damage. Pipe shall not 
be laid on the ground surface where subject to mechanical injury. 

M -808.2 Flood hazard: All outside above-ground piping located in a 
flood-hazard zone (A Zone) or a high-hazard zone (V Zone) shall be 
anchored and reinforced so that the piping is capable of resisting 
hydrostatic and hydrodynamic loads and stresses, including the effects 
of buoyancy, and loads resulting from water-borne debris during the 
occurrence of flooding to the base flood elevation. 

SECTION §1-809.0 INSIDE BUILDING GAS PIPING 

M-809.1 Stresses and strains: Gas piping shall be installed so as to 
prevent strains and stresses which exceed the structural strength of the 
pipe. Provisions shall be made to protect the piping from damage 
resulting from expansion, contraction and structural settlement. 



Piping shall be installed so as not to create structural stresses or strains 
within building components. 

M-809.2 Piping for other than dry gas: Piping for other than dry gas 
shall be sloped not less than Va inch in 15 feet ( 1 :720). Horizontal lines 
shall slope upward to the risers and upward from the risers to the meter, 
the service regulator or the equipment. Drips shall be provided at such 
points to act as storage for condensate. Access shall be provided to drips. 
A drip shall not be located where the condensate will freeze. 

M-809.2.1 Branch connections: All branch connections shall be 
made on the top or side of horizontal lines. 

M-809.3 Prohibited locations: Gas piping shall not be run in or through 

supply air ducts, clothes chutes, chimneys, vents, dumbwaiters or 
elevator shafts. 

M-809.3. 1 Air plenums: Valves shall not be located in any air 
plenum. 

M-809.4 Piping in concealed locations: Portions of a gas piping 
system installed in concealed locations shall not have unions, tubing 
fittings or running threads. 

M-809.5 Protection against physical damage: In concealed locations, 
where gas piping other than black or galvanized steel is installed through 
holes or notches in wood studs, joists, rafters or similar members less 
than 1 Va inches (32 mm) from the nearest edge of the member, the pipe 
shall be protected by shield plates. Shield plates shall be a minimum of 
V\ 6- inch -thick (2 mm) steel, shall cover the area of the pipe where the 
member is notched or bored, and shall extend a minimum of 4 inches 
(102 mm) above sole plates, below top plates and to each side of a stud, 
joist or rafter. 

M-809.6 Concrete slabs: Gas piping embedded in concrete slabs shall 
be surrounded with a minimum of 1 Vi inches (38 mm) of concrete. The 
pipe shall not be in contact with any metal. The slab concrete shall not 
contain quickset additives or cinder aggregate. 

M-809.7 Cutting or notching: A structural member shall not be cut, 
notched or pierced in excess of the limitations specified in the building 
code listed in Chapter 21, unless proven safe by a structural analysis. 

SECTION M-810.0 HANGERS AND SUPPORTS 

M-810.1 Hanger material: Hangers and supports shall be of material 
of sufficient strength to support the piping. Hangers and strapping 
material shall be of similar material as the piping to avoid galvanic 
action. 

M -810.2 Interval of support: Gas piping shall be supported at intervals 
not exceeding the spacing specified in Table M-8 10.2. 

Table SVI-810.2 
HANGER SPACING 



Material 



Maximum spacing (feet) a 



Rigid pipe, 3 /4-inch diameter and under 
Rigid pipe, 1 -inch diameter and over 
Tubing, 1 1 /4-inch diameter and under 
Tubing, 1 VMnch diameter and over 



10 

12 

6 

10 



Note a. 1 toot = 304.8 mm. 

SECTION M-811.0 SHUT0FF VALVES 

M -81.1.1 Valve approval: Shutoff valves shall be of an approved type. 
Shutoff valves shall be constructed with materials compatible with the 
gas piping. 

M-811.2 Exterior shutoff: An exterior shutoff valve shall be provided 
for each structure. 

M-811.3 Meter valve: Every meter shall be equipped with a shutoff 
valve located on the supply side of the meter. 



103 



THE BOCA NATIONAL PLUMBING CODE/1993 



M-811.4 Appliance connection: Every gas outlet shall have an in- 
dividual shutoff valve. The shutoff valve shall be adjacent to the 
appliance. Access shall be provided to the shutoff valve. 

SECTION WS-812.0 OUTLETS AND CONNECTIONS 

M -8 12.1 Gas connections: Gas appliances and equipment shall be 
connected by rigid pipe, tubing or flexible connectors. A union shall be 
installed between the appliance and the appliance shutoff valve. 

M-812.2 Capped outlets: Gas outlets that do not connect to appliances 
shall be capped gas tight. 

SECTION M-813.0 GAS-DISPENSING SYSTEMS 

M-813.1 Dispenser protection: The gas dispenser shall have an emer- 
gency switch to shut off the power to the dispenser. An approved 
back flow device that prevents the reverse flow of gas shall be installed 
on the gas supply pipe or in the gas dispenser. 

M -8 13.2 Ventilation: Gas-dispensing systems installed inside the struc- 
ture shall be vent Hated by mechanical means in accordance with Section 
M- 1604.0. 

M-813.3 Compressed natural gas vehicular fuel systems: Com- 
pressed natural gas (CNG) fuel -dispensing systems for CNG vehicles 
shall be designed and installed in accordance with NFiPA 52 listed in 
Chapter 21. 

SECTION M-814.0 SUPPLEMENTAL AND STANDBY GAS SUPPLY 

M -8 14.1 Special supplementary gas: Where air, oxygen or other 
special supplementary gas is introduced into the gas piping system, an 
approved backflow preventer shall be installed. The backflow preventer 
shall be on the gas line to the equipment supplied by the special gas and 
located between the source of the special gas and the gas meter. 

M -814.2 Standby gas: Where LP-gas or other standby gas is intercon- 
nected with regular gas piping systems, an approved three-way, two-port 
valve or other approved safeguard shall be installed to prevent backflow 
into either supply system. 

SECTION fW-815.0 TESTING 

M -81 5.1 General: The gas piping shall be tested and inspected in 
accordance with NFiPA 54 listed in Chapter 21. 

SECTION M-816.0 PURGING GAS PIPING 

M-816.1 General: Gas piping systems shall be purged in accordance 
with NFiPA 54 listed in Chapter 21. 



104 



INDEX 

By section number 



ABS Pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0 
Access to 

Backwater valves, P-1 005.4 

Cleanouts, P-1103.5, P-1104.1, P-1110.0 

Fixtures, P-1 206.0 

Floor drain traps, P-1 21 3.2 

Interceptors and separators, P-1 004.13 
Accessible plumbing facilities, P-1 205.0 
Administration (also see Code official, Permit and Structures) 

Applicability, P-1 02.0 

Approval, P-1 07.0, P-1 18.0 

Emergency measures, P-1 20.0 

Fees, P-11 3.0 

Inspections, P-114.0, P-1702.0 

Intent, P-1 01. 3 

Means of appeal, P-1 21 .0 

Repairs and maintenance, P-1 03.0 

Scope, P-1 01 .2 

Stop work order, P-11 7.0 

Unsafe conditions, P-1 19.0 

Validity, P-1 04.0 

Violations, P-1 16.0 

Workmanship, P-1 15.0 
Administrative authority (also see Code official) 

Definition, P-202.0 
Air admittance valves, P-1 806.0 
Air break 

Definition, P-202.0 

Method of providing, P-703.2.2 

Required, P-703.2 
Air gap 

Definition, P-202.0 

Method of providing, P-703.2. 1 

Waste required, P-703.2 

Water outlets, P-1507.12.1 
Airiest, P-1 703.5 

Alterations and repairs, P-1 02.4, P-1 03.0 
Alternative materials and equipment, P-1 07.4 
Approval required 

Building traps, P-1 003.7 

Change in occupancy, P-1 02.3 

Construction documents, P-1 08.5, P-1 09.5 

Interceptors and separators, P-1 004.0 

Materials, P-1 07.0 

Notice of, P-1 18.0 

Ordinary repairs, P-1 03.0 

Special fixtures, P-1 224.2 
Approved 

Definition, P-202.0 

Joints, P-501.2 
Asbestos-cement pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0 
Atmospheric vacuum breaker, P-1 507.9.4, P-1 507.1 2.3 
Automatic clothes washer, P-1 207.0 

B 

Backfilling, P-309.9 
Backflow preventer 

Approval, P-1 507.0 

Definition, P-202.0 

Double check valves, P-1 507.0 

Required, P-1 507.10, P-1 507.1 2 

Standards, P-1 507.9 
Backflow protection, P-1 507.0 



Backwater valves 

Access to, P-1 005.4 

Definition, P-202.0 

Standard, P-1 005.1 

Where required, P-1 005.3 
Ball cock, P-1 222.4.1 
Barometric loop, P-1 507.9.5 
Bathtubs, P-1 208.0 

Bedpan steamers, P-1404.2, P-1404.10 
Bedpan washers, P-1 404.1 
Bidets, P-1 209.0 
Bituminized fiber pipe (also see Material) 

Where permitted, P-403.0, P-405.0 
Booster system, P-1 506.4 
Bottle system, P-1 404.4 
Bottling establishment, P-1004.10 
Brass pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0, P-406.0 
Building drain (also see Drainage system) 

Definition, P-202.0 

Material, P-404.0, P-405.0 

Sizing, sanitary, P-603.0 

Sizing, storm, P-805.0 
Building drainage systems, sumps, ejectors and pumps 

Below sewer level, P-606.0 
Building sanitary drainage system 

Connections, P-303.1 
Building sewer (also see Drainage system) 

Definition, P-202.0 

Material, P-404.0 

Protection of pipe, P-309.0 

Sizing, sanitary, P-603.0 

Sizing, storm, P-805.0 
Building systems 

Connection to public water and sewer, P-304.0 
Building traps, P-1 003.7 



Cast-iron pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0 
Caulking ferrules, P-407.5 
Change in direction of drainage piping, P-605.0 
Chemical waste 

Exclusion from the sewer, P-305.2 

Material, P-404.5 

Neutralizing, P-704.0 
Clay pipe (also see Material) 

Where permitted, P-404.0, P-405.0 
Cleanouts 

Access, P-1110.0 

Base of stack, P-1 103.4 

Building drain junction, P-1103.5 

Change of direction, P-1 103.3 

Clearances, P-11 09.0 

Concealed piping, P-11 05.1 

Definition, P-202.0 

Direction of flow, P-11 06.0 

Location of, P-1 103.0 

Manholes, P-1 108.0 

Plugs, material for, P-407.8 

Prohibited installation of, P-1 110.2 

Size, P-1107.1 

Underground drainage, P-11 04.0 
Clear-water waste, P-703.0 
Code official 

Annual report, P-1 06.8 

Application for permit, P-1 08.0 

Appointment, P-1 05.2 

Definition, P-202.0 

Department records, P-1 06.7 

Duties and powers, P-1 06.0 

General, P-1 05.0 

Identification, P-1 06.5 



105 



THE BOCA NATIONAL PLUMBING CODE/1993 



Inspections, P-1 06.4 

Notice and orders, P-106.3 

Relief from personal responsibility, P-1 05.3 
Combined drain, P-804.1, P-805.4 
Common vents, P-909.0 
Concrete pipe (also see Material) 

Where permitted, P-404.0, P-405.0 
Conductor pipe (also see Storm drains), P-805.0, P-809.0 
Connections, Chapter 5 

Connections to plumbing system required, P-303.0 
Connections to public water and sewer system, P-304.0 
Connections to sumps and ejectors 

Below sewer level, P-606.0 
Conservation 

Fixtures, P-1220.1, P-1221.1, P-1222.3 

Flow rates, P-1 505.9 

Heaters, P-1 508.4 

Insulation, P-1 508.3 
Construction documents, P-1 08.5 
Continuous flow values, P-603.1 .1 
Controlled flow storm drainage, P-811 .0 
Copper or copper-alloy pipe or tubing (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0, P-406.0 
CPVC pipe or tubing (also see Material) 

Where permitted, P-403.0 
Cross connections, P-1507.4 
Cutting or notching, structural members, P-302.3 



Dead ends in drainage system, P-604.5 

Definitions, P-202.0 

Design professional, registered, Chapter 1, Chapter 18 

Detrimental wastes, P-305.0 

Dishwashing machine, P-1 21 0.0 

Disinfection of potable water system, P-1 509.0 

Distance of trap from vent, P-911 .1 

Distribution system (see Water) 

Drain 

Floor, P-1 21 3.0 

Roof, P-810.0 

Storm, Chapter 8 

Subsoil, P-807.0 
Drainage fixture units 

Definition, fixture unit, P-202.0 

Values for continuous flow, P-603.1 .1 

Values for fixtures, P-603.0 
Drainage system 

Change in direction of piping, P-605.0 

Connection to sewer or private disposal system, P-303.0, P-304.0 

Dead ends, P-604.5 

Determining load, P-603.1 

Determining size, P-603.2 

Fittings and connections, P-605.0 

Fixture units, P-603.1 

Horizontal drains, P-603.2 

Indirect waste, Chapter 7 

Joints and connections, Chapter 5 

Material, P-404.0, P-405.0 

Material detrimental to, P-305.0 

Offset sizing, P-603.3 

Pipe installation, P-604.0 

Provisions for future fixtures, P-604.4 

Sizing, P-603.2 

Slope of pipe, P-604.1 

Sumps and ejectors, P-606.0 

Testing, P-1 703.5 
Drinking fountains, P-1 21 1.0 
Drips or drainage outlets, P-703.0 



Ejectors, P-606.0 
Ejectors, grinder, P-606.0 
Emergency floor drains, P-602.0 



Employee facilities, P-1 204.4 

Engineered plumbing systems 
Design criteria, P-1 803.0 
Inspections required, P-1 806.0 
Vent system, P-1 807.0 

Existing building plumbing systems, P-1 03.0 



Facilities, P-1 204.0, Table P-1 204.1 

Faucets, P-1 225.0 

Fees, P-1 13.0 

Ferrules, P-407.5 

Fittings 

Drainage system, P-605.0 

Material standards, P-406.1 
Fixture fittings, P-1 225.0 
Fixture traps, P-1 003.0 

Acid-resisting, P-1 003.8 

Building, P-1 003.7 

Design of, P-1 003.4 

For each fixture, P-1 003.1 

Prohibited, P-1 003.3 

Seals, P-1 003.5 

Setting and protection, P-1 003.6 

Size, P-1003.2 
Fixture units 

Definition, P-202.0 

Values for continuous flow, P-603.1 .1 

Values for fixtures, P-603.1 , Table 603.1 (1 ) 
Fixtures (see Plumbing fixtures) 
Flood level rim (also see Backflow protection), P-202.0 
Floor drains, P-1 21 3.0 
Floor drains, emergency, P-602.0, P-603.0 
Floor flanges, P-407.7, P-522.1, P-1 206.3 
Flow rates, P-1 505.7, Table P-1 505.7, P-1 505.8 
Flushing devices 

Flush tanks, P-1 222.4, P-1 505.2, P-1 505.7 

Flushometer tanks, P-1222.5, P-1505.2 

Flushometer valves, P-1222.3, P-1505.2 

Required, P-1 222.0 
Food-handling drainage, P-703.1 
Food waste grinder, P-1 21 4.0 
Footings, protection of, P-302.4 
Freezing, protection of pipes, P-309.4 
Frost closure, P-916.0 
Future fixtures, P-604.4 



Galvanized steel pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0, P-406.0 
Garbage can washers, P-1 21 5.0 
Garbage disposals, P-1214.0 
General regulations 

Connections to plumbing system, P-303.0 

Connections to public water and sewer system, P-304.0 

Elevator machinery rooms, P-313.0 

Health and safety, P-302.0 

Materials detrimental, P-305.0 

Piping measurements, P-306.0 

Protection of pipes, P-309.0 

Ratproofing, P-311.0 

Sleeves, P-310.0 

Strains and stresses in pipe, P-308.0 

Toilet facilities for workers, P-31 2.0 

Trenching, excavation and backfill, P-309.6 

Washroom requirements, P-307.0 
Grease interceptors 

Approval, P-1 004.3 

Capacity, P-1 004.6.1 

In commercial buildings, P-1 004.6 

Not required, P-1 004.1.1 

Required, P-1 004.1, P-1 004.6 
Gutters, P-805.3 



106 



INDEX 



H 



Hangers and supports 

Attachment to buildings, P-1 303.0 

Base of stacks, P-1 305.0 

Definitions, P-202.0 

Material, P-1 302.0 

Seismic, P-1 301. 2 

Spacing, P-1 304.0 
Health and safety, P-302.0 

Health care plumbing (also see Hospital plumbing fixtures), Chapter 14 
Heat exchanger protection, P-1 507. 13.2 
Heel or side inlet bend, P-605.0 
Horizontal 

Branches, P-603.2 

Slope for drainage pipe, P-604.1 
Hospital plumbing fixtures 

Clinical sinks, P-1 403.5 

Height of special controls, P-1 403.9 

Sterilizer equipment, P-1 403.8 
Hot water 

Heaters and tanks, P-1 508.4 

Supply system, P-1 508.0 
House trap, P-1 003.7 



Indirect wastes 

Air gap or break, P-703.2 

Food-handling establishments, P-703.1.1 

Receptors, P-703.2 

Special wastes, P-704.0 

Sterilizing equipment, P-703.1.2 

Swimming pools, P-703. 1.2 

Waste-water temperature, P-703.5 
Individual vent, P-903.1 
Individual water supply 

Pumping equipment, P-1 607.0 

Quantity required, P-1605.1 

Types of, P-1 604.0 

Wells, P-1 606.2 
Inspections 

Final, P-1 702.4 

Plumbing, P-114.0 

Reinspection, P-1 702.5 

Required, P-1702.1 

Rough-in, P-1 702.3 

Scheduling of, P-1702.1 

Water supply system, P-1 703.7 
Inspector (see Code official) 
Insulation, P-1 508.3.1, P-1 508.4.5 
Interceptors and separators 

Access to, P-1004.13 

Approval of, P-1 004.3 

Bottling establishments, P-1 004. 1 

Capacity of grease interceptor, P-1 004.6.1 

Commercial grinders, P-1 004.6 

Definition, P-202.0 

Grease, P-1 004.6 

Laundries, P-1 004.9 

Not required, P-1 004. 1.1 

Oil and flammable liquids separator, P-1 004.7 

Rate of flow control for grease interceptors, P-1 004.6.1 , 
Table P-1 004.6.1 

Required, P-1 004.1, P-1 004.6 

Sand interceptors, P-1 004.8 

Separators required, P-1 004.2 

Slaughter houses, P-1 004.11 

Venting, P-1 004.1 2 
Interconnections, P-1 507.4 
Irrigation, lawn, P-1 507.1 3.5 



Joints and connections, Chapter 5 
ABS plastic pipe, P-503.0 
Asbestos-cement pipe, P-504.0 
Between different material, P-51 8.0 
Between fixtures, P-520.0 
Bituminized fiber pipe, P-505.0 
Brass pipe, P-506.0 

Brazed joints, P-506.2, P-509.2, P-51 0.2 
Cast-iron pipe, P-507.0 
Caulked joint, P-507.3 
Concrete pipe, P-508.0 
Copper or copper-alloy pipe, P-509.0 
Copper or copper-alloy tubing, P-51 0.0 
CPVC plastic pipe, P-51 1.0 
Expansion joints, P-521 .0 
Exterior openings, P-522.2 
Flared joint, P-510.3, P-514.2, P-515.2 
Galvanized steel pipe, P-51 2.0 
Heat fusion, P-514.3, P-515.3 
Lead pipe, P-51 3.0 
Mechanical joints, P-503.2, P-506.3, P-507.4, P-507.5, P-509.3, 

P-51 0.4, P-51 1.2, P-51 2.3, P-51 4.4, P-51 5.4, P-51 6.2 
Mechanical joints, couplings, P-507.5 
Penetrations, P-522.0 

Polybutylene plastic pipe or tubing, P-51 4.0 
Polyethylene plastic pipe or tubing, P-51 5.0 
Prohibited, P-51 9.0 
PVC plastic pipe, P-51 6.0 
Slip joints, P-520.2 
Soldered joints, P-509.4, P-51 0.5 
Solvent cementing, P-503.3, P-511.3, P-516.3 
Threaded, P-503.4, P-506.4, P-509.5, P-51 1.4, P-51 2.2, P-51 6.4 
Vitrified clay pipe, P-51 7.0 
Welded, P-506.5, P-509.6 



Kitchen sinks, P-1 21 9.0 



Laundries, P-1 004.9 

Laundry trays, P-1 21 6.0 

Lavatories, P-1 21 7.0 

Lead joints (see Joints and connections) 

Lead pipe (also see Material) 

Where permitted, P-404.0 
Lead sheet, P-407.1 
Lead traps and bends, P-407.2 
Leaders, P-805.2, P-808.0 
Light and ventilation requirements, P-307.1 
Loading, fixture unit value, P-603.1 , Table P-603.1 (1 ) 



m 



Maintenance, P-1 704.0 
Manholes, P-1 108.0 
Manifolds, P-1 505.8, Chapter 2 
Material 

Above-ground drainage and vent pipe, P-404.1 

Alternative, P-1 07.4 

Approval, P-1 07.0 

Building sewer pipe, P-404.3 

Building storm sewer pipe, P-405.3 

Chemical waste pipe, P-404.5 

Conductors, inside, P-405.1 

Fittings, P-406.1 

Gutters, P-805.3 

Identification, P-402.0 

Joints, Chapter 5 

Leaders, P-405.1, P-805.0 

Roof drains, P-405.5 



107 



THE BOCA NATIONAL PLUMBING CODE/1993 



Sewer pipe, P-404.3, P-405.3 

Standards, Chapter 19 

Storm drainage pipe, P-405.0 

Subsoil drain pipe, P-405.4 

Underground building drainage and vent pipe, P-404.2 

Valves, P-406.2 

Vent pipe, P-404.0 

Water distribution pipe, P-403.5 

Water service pipe, P-403.4 
Material, fixtures (also see Plumbing fixtures) 

Quality, P-408.1 

Special use, P-408.2 
Material, special 

Caulking ferrules, P-407.5 

Cleanout plugs, P-407.8 

Copper or tubular brass traps, P-407.3 

Floor flanges, P-407.7 

Flush pipes and fittings, P-407.9 

Sheet copper, P-407.4 

Sheet lead, P-407.1 

Soldering bushings, P-407.6 
Mechanical joints, Chapter 5 

Definition, P-202.0 

N 

Nonpotable water, P-1 507.1, P-1 507.3 



Offsets 

Definition, P-202.0 

Drainage, P-603.3 

Venting, P-905.5 
Openings 

Through walls or roofs, P-522.0 

Water, P-1 507.1 2 



Permit (also see Administration) 

Action on, P-1 09.1 

Application for, P-1 08.0 

Conditions of, P-1 12.0 

Fees, P-1 13.0 

Previous approvals, P-1 09.3 

Suspension of, P-1 09.2 
Piping (also see Material and Piping protection) 

Construction documents, P-1 08.5, P-1 08.6, P-1 08.7 

Drainage, horizontal slope, P-604.1 

Drainage piping installation, P-604.0 

Drainage piping offset, size, P-603.3 

Drainage piping size, P-603.0 

Joints, Chapter 5 

Measurements, P-306.0 
Piping protection 

Backfilling, P-309.9 

Breakage, P-309.1 

Corrosion, P-309.3 

Footings, P-302.4 

Freezing, P-309.4 

Penetration, P-309.2 

Trenching and bedding, P-309.6 

Tunneling, P-309.8 
Plans 

Construction documents, P-1 08.5 
Plastic pipe (see particular type of plastic pipe) 
Plumbing facilities, P-1 204.0 
Plumbing fixtures (also see Flushing devices) 

Accessible, P-1 205.0 

Automatic clothes washer, P-1 207.0 

Bathtubs, P-1 208.0 

Bidets, P-1 209.0 

Clearances, P-1 206.2 

Connection to drainage piping, P-303.1 , P-1 203.0 



Definition, P-202.0 

DFU values, P-603.1 

Dishwashing machine, P-1 21 0.0 

Drinking fountain, P-1 21 1 .0 

Emergency showers, P-1 21 2.0 

Employees, Table P-1 204.1, P-1 204.4 

Eye wash stations, P-1 21 2.0 

Faucets, P-1 225.0 

Fixture fittings, P-1 225.0 

Fixture unit values, P-603.1 

Floor drains, P-1 21 3.0 

Food waste grinder, P-1 21 4.0 

Future fixtures, P-604.4 

Garbage can washer, P-1 2 15.0 

Garbage disposal, P-1 21 4.0 

Hospitai, Chapter 14 

Installation, P-1 206.0 

Joints at wall or floor, P-1 206.3, P-1 206.4, P-1 206.5 

Kitchen sink, P-1219.0 

Laundry tray, P-1 21 6.0 

Lavatories, P-1 21 7.0 

Minimum facilities, P-1 204.0, Table P-1 204.1 

Ornamental pools, P-1 224.1 

Quality, P-408.1 

Separate facilities, P-1 204.2 

Service sinks, P-1219.0 

Settings, P-1 206.2 

Showers, P-1 21 8.0 

Sinks, P-1219.0 

Slop sinks, P-1219.0 

Special fixtures, P-1224.0 

Toilets, P-1 221.0 

Urinals, P-1 220.0 

Washing machine, P-1 207.0 

Water closets, P-1 221.0 

Water coolers, P-1 21 1.0 

Water supply, protection, P-1 507.0 

Where required, P-1 204.1, Table P-1204.1 
Plumbing inspector (see Code official) 
Plumbing systems 

Connection to public water and sewer systems, P-304.0 

Connections to required systems, P-303.0 

Definitions, P-202.0 

Engineered, Chapter 18 

Inspections, Chapter 17 

Maintenance, P-1 704.0 

Tests, P-1 703.0 
Pneumatic ejectors, P-606.0, P-904.2.2 
Polybutylene pipe or tubing (also see Material) 

Where permitted, P-403.0 
Polyethylene pipe or tubing (also see Material) 

Cross-linked, Chapter 4 

PE-AL-PE, Chapter 4 

PEX-AL-PEX, Chapter 4 

Where permitted, P-403.0 
Polyolefin pipe, Chapter 4 
Potable water, protection of, P-1 507.0 
Pressure of water distribution, P-1 505.3 
Pressure relief valve, P-1 508.5 
Private water supply, Chapter 16 
Prohibited 

Industrial waste disposal, P-305.2 

Joints and connections, P-519.0 

Traps, P-1 003.3 
Protection of potable water, P-1 507.0 
Pumping equipment, P-1 607.0 
PVC pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0 



Quality of water 

General, P-1 507.1 
Individual, P-1 605.2 



108 



INDEX 



Rainwater drainage, Chapter 8 

Ratproofing, P-311.0 

Reduced pressure principle backflow preventer 

Definition, P-202.0 

Standard, P-1 507.9.3 

Where required, P-1 507.11, P-1 507.1 2 
Relief valves, P-1 508.5 
Relief vent, P-912.0 
Roof drains, P-405.5 
Rough-in inspection, P-1 702.3 



Structural members, cutting of, P-302.3 
Structures 

Demolition of, P-110.0 

Moved, P-1 11.0 
Styrene rubber pipe (also see Material) 

Where permitted, P-405.0 
Subdrain, building, P-806.0 
Subsoil drain pipe, P-807.0 
Sump venting, P-904.2 
Sumps, P-806.1 

Supports (also see Hangers and supports), Chapter 13 
Swimming pool drainage, P-703.1.2 



Safety and health, P-302.0 

Safety devices, P-1 508.4 

Sanitary sewer (see Building sewer) 

Sanitary tees, P-605.0 

Screwed joints (see Joints and connections) 

Separate facilities, P-1 204.2 

Service sinks, P-1 21 9.0 

Sewer (see Building sewer) 

Sheet copper, P-407.4 

Sheet lead, P-407.1 

Showers, P-1 21 8.0 

Sill cock P-1 225.0 

Sinks, P-1 21 9.0 

Sizing 

Drainage system, P-603.0 

Fixture drain, P-603.1 

Fixture water supply, P-1 505.2 

Vent system, P-904.0 

Water distribution system, Chapter 15 

Water service, P-1504.1 
Slaughterhouse, P-1004.11 
Sleeves, P-310.0 

Slip joints (see Joints and connections) 
Slop sink, P-1 21 9.0 
Slope 

Drainage piping, P-604.1 

Vent piping, P-907.0 
Soil pipe (see Drainage system) 
Soldered joints (see Joints and connections) 
Soldering bushings, P-407.6 
Solvent cementing (see Joints and connections) 
Special materials, P-407.0 
Special plumbing fixtures, P-1 224.0 
Special wastes, P-704.0 
Standards 

Material, Chapter 19 
Standpipe drain, P-703.4 
Steel pipe (also see Material) 

Where permitted, P-403.0, P-404.0, P-405.0, P-406.0 
Sterilizer piping, P-1 403.8.1 
Storm drains 

Building size, P-805.1 

Building subdrains, P-806.0 

Building subsoil drains, P-807.0 

Conductors and connections, P-809.0 

Controlled flow, P-811.0 

Definition, P-202.0 

Double connections, P-809.4 

General, P-801.1 

Prohibited drainage, P-804.0 

Roof drains, P-810.0 

Sizing combined drains and sewers, P-805.4 

Sizing gutters, P-805.3 

Sizing vertical conductors and leaders, P-805.2 

Traps, P-808.0 

Values for continuous flow, P-805.5 

Where required, P-803.0 
Strains and stresses in piping, P-308.0 
Straps (see Hangers) 



Temperature and pressure relief valve, P-1 508.5 

Temperature of waste water, P-703.5 

Tests 

Air or water, P-1 703.5.1 

Building sewer, P-1 703.6 

Defective plumbing, P-1 703.2 

Exceptions, P-1 703.1 

Final, P-1 702.4 

Material and labor, P-1 703.4 

Methods for drainage and vent systems, P-1 703.5 

Water supply system, P-1 703.7 
Thermal expansion control, P-1 508.7 
Threaded joints (see Joints and connections) 
Tightness of joints, P-501 .3 
Toilet facilities for workers, P-31 2.0 
Toilets (also see Water closets), P-1 221 .0 
Trap 

Acid-resisting, P-1 003.8 

Building, P-1 003.7 

Design, P-1 003.4 

Prohibited types, P-1 003.3 

Seal, P-1 003.5 

Separate for each fixture, P-1 003.1 

Size, P-603.1 

Water seal, P-1 003.5 
Trenching, excavation and backfill, P-309.6, P-309.9 
Tunneling, P-309.8 



u 



Underground drainage and vent pipe, P-404.2 
Urinals, P-1 220.0 



Vacuum breakers, P-1507.9.6, P-1507.12.3 

Validity of code, P-1 04.0 

Valves 

Air admittance, P-1 808.0 

Backwater, P-1 005.0 

Master thermostatic mixing, P-1 225.6 

Pressure-reducing, P-406.0, P-1 505.3 

Relief, P-406.0, P-1 508.5 

Safety, P-406.0, P-1 508.5 

Standards, Table P-406.2 

Water, where required, P-1 506.1, P-1 506.2 
Velocity in 

Water lines, P-1 505.4 
Vent 

Individual, P-903.1 

Main, P-905.1 

Material, P-404.0 

Multiple branch, P-904.1.2 

Sizing, P-904.0 
Vent relief size, P-912.0 
Vent stack 

Definition, P-202.0 

Size, P-905.0 



109 



THE BOCA NATIONAL PLUMBING CODE/1993 



Vents and venting 

Circuit or loop, P-904.1, P-910.0 

Combination drain and, P-913.0 

Common, P-909.0 

Definition, P-202.0 

Distance from trap, P-911 .1 

Engineered system, Chapter 18 

Individual, P-903.1 

Main, P-905.1 

Size and length, P-904.0 

Stack vents, P-905.0 

Vent grades and connection, P-907.0 

Vent headers, P-905.6 

Vent stacks required, P-905.2 

Vent terminal, P-906.0 

Wet vent, P-908.0 

Where required, P-903.0 
Vitrified clay pipe (also see Material) 

Where permitted, P-404.0, P-405.0 

w 

Wall-hung water closets, P-1 206.5, P-1 221.0 
Washing machines, P-1 207.0 
Waste (also see Drainage system) 

Indirect, Chapter 7 

Industrial, P-305.2 

Special, P-704.0 
Waste-water temperature, P-703.5 
Water 

Booster, P-1 506.4 

Cross connection, P-1 507.4 

Distribution piping material, P-403.5 

Distribution system design, P-1 505.0 

Distribution system installation, P-1 506.0 

Excessive pressure, P-1505.3 

Hammer, P-1 505.4 

Hot water, P-1 508.0 

Identification of potable and nonpotable, P-1 507.3 

Pipe in sewer trench, P-404.3.1, P-1 504.0 

Piping material, P-403.0 

Pressure, P-1505.3 

Protection of potable water, P-1 507.0 

Required, P-1 503.0 

Service size, P-1 504.1 

Tanks, P-1 506.4 
Water closets, P-1 221.0 
Water conservation 

Fixtures, P-1 207.1, P-1 222.3 

Flow rates, Table P-1 505.7, P-1 505.9 

Flushing, P-1 222.3, P-1 505.9 
Water coolers, P-1 21 1.0 

Water distribution system and connection, P-304.1 
Water distribution system, parallel, P-1 505.8 
Water heaters 

Approval, P-1 508.4 

Definition, P-202.0 

Insulation, P-1 508.4.5 

Relief valve, P-1 508.5 

Sizing, P-1508.4.1 

Tankless, P-1 508.4.4 
Water tests 

Rough plumbing, P-1 703.5.1 

Finished plumbing, P-1 703.5.2 
Welded joints (see Joints and connections) 
Wells, Chapter 16 
Wet venting, P-908.0 
Wiped joints (see Joints and connections) 
Worker's toilet facilities, P-31 2.0 
Workmanship, P-1 15.0 



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